/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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:38,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:38,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:38,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:38,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:38,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:38,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:38,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:38,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:38,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:38,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:38,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:38,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:38,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:38,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:38,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:38,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:38,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:38,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:38,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:38,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:38,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:38,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:38,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:38,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:38,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:38,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:38,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:38,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:38,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:38,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:38,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:38,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:38,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:38,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:38,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:38,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:38,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:38,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:38,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:38,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:38,286 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 13:33:38,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:38,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:38,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:38,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:38,338 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:38,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:38,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:38,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:38,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:38,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:38,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:38,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:38,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:38,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:38,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:38,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:38,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:38,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:38,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:38,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:38,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:38,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:38,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:38,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:38,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:38,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:38,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:38,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:38,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:38,346 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 13:33:38,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:38,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:38,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:38,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:38,838 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:38,839 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 13:33:38,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7277735ad/a90b79cf57f84cb7ab65ebc2c6a82609/FLAG839b178d0 [2020-09-25 13:33:39,658 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:39,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 13:33:39,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7277735ad/a90b79cf57f84cb7ab65ebc2c6a82609/FLAG839b178d0 [2020-09-25 13:33:39,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7277735ad/a90b79cf57f84cb7ab65ebc2c6a82609 [2020-09-25 13:33:39,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:39,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:39,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:39,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:39,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:39,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:39" (1/1) ... [2020-09-25 13:33:39,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:39, skipping insertion in model container [2020-09-25 13:33:39,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:39" (1/1) ... [2020-09-25 13:33:39,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:39,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:40,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:40,588 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:40,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:40,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:40,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40 WrapperNode [2020-09-25 13:33:40,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:40,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:40,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:40,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:40,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (1/1) ... [2020-09-25 13:33:40,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:40,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:40,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:40,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:40,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (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 13:33:41,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:41,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:42,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:42,510 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:42,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:42 BoogieIcfgContainer [2020-09-25 13:33:42,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:42,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:42,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:42,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:42,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:39" (1/3) ... [2020-09-25 13:33:42,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f80f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:42, skipping insertion in model container [2020-09-25 13:33:42,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:40" (2/3) ... [2020-09-25 13:33:42,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f80f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:42, skipping insertion in model container [2020-09-25 13:33:42,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:42" (3/3) ... [2020-09-25 13:33:42,530 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 13:33:42,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:42,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:42,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:42,607 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:42,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:42,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:42,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:42,608 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:42,608 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:42,608 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:42,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 13:33:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:42,649 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] [2020-09-25 13:33:42,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 13:33:42,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:42,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195117963] [2020-09-25 13:33:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:43,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:33:43,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:43,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-25 13:33:43,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:43,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:43,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 13:33:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:43,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:43,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:33:43,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:43,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:43,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:44,011 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 13:33:44,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195117963] [2020-09-25 13:33:44,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:44,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:44,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581988680] [2020-09-25 13:33:44,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:44,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:44,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:44,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:44,046 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:33:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:46,119 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 13:33:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:46,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-25 13:33:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:46,159 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 13:33:46,160 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:33:46,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:46,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:33:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 13:33:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 13:33:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 13:33:46,280 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 43 [2020-09-25 13:33:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:46,280 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 13:33:46,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 13:33:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 13:33:46,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:46,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:46,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:46,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1041597203, now seen corresponding path program 1 times [2020-09-25 13:33:46,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:46,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507121812] [2020-09-25 13:33:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 13:33:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-09-25 13:33:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:33:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:33:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:48,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:33:48,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:48,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:33:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 13:33:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:33:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:48,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507121812] [2020-09-25 13:33:48,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:48,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:33:48,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664525419] [2020-09-25 13:33:48,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:48,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:48,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:48,577 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 13:33:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:51,509 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 13:33:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:33:51,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-09-25 13:33:51,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:51,519 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 13:33:51,519 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 13:33:51,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 13:33:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 13:33:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 13:33:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 13:33:51,587 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 123 [2020-09-25 13:33:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:51,588 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 13:33:51,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 13:33:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:33:51,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:51,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:51,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:51,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 13:33:51,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:51,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332150365] [2020-09-25 13:33:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:33:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:33:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2332 [2020-09-25 13:33:53,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:53,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:33:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 13:33:53,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:33:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:33:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:33:54,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 13:33:54,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:33:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:54,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332150365] [2020-09-25 13:33:54,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:54,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:33:54,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068533990] [2020-09-25 13:33:54,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:33:54,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:54,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:33:54,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:54,598 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 12 states. [2020-09-25 13:33:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:57,682 INFO L93 Difference]: Finished difference Result 2575 states and 3274 transitions. [2020-09-25 13:33:57,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:33:57,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-25 13:33:57,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:57,698 INFO L225 Difference]: With dead ends: 2575 [2020-09-25 13:33:57,698 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 13:33:57,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:33:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 13:33:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1337. [2020-09-25 13:33:57,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-09-25 13:33:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1650 transitions. [2020-09-25 13:33:57,783 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1650 transitions. Word has length 132 [2020-09-25 13:33:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:57,786 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1650 transitions. [2020-09-25 13:33:57,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:33:57,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1650 transitions. [2020-09-25 13:33:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 13:33:57,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:57,798 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:57,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:57,799 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:57,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:57,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1479799897, now seen corresponding path program 1 times [2020-09-25 13:33:57,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:57,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156595392] [2020-09-25 13:33:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 13:34:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:34:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:02,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:34:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:34:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:02,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:03,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 13:34:03,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:03,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 13:34:03,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:03,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156595392] [2020-09-25 13:34:03,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:03,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:34:03,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797372555] [2020-09-25 13:34:03,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:34:03,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:34:03,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:03,403 INFO L87 Difference]: Start difference. First operand 1337 states and 1650 transitions. Second operand 9 states. [2020-09-25 13:34:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:06,564 INFO L93 Difference]: Finished difference Result 3219 states and 4140 transitions. [2020-09-25 13:34:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:34:06,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-09-25 13:34:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:06,578 INFO L225 Difference]: With dead ends: 3219 [2020-09-25 13:34:06,579 INFO L226 Difference]: Without dead ends: 2047 [2020-09-25 13:34:06,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:34:06,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2020-09-25 13:34:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1835. [2020-09-25 13:34:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-09-25 13:34:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2254 transitions. [2020-09-25 13:34:06,649 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2254 transitions. Word has length 211 [2020-09-25 13:34:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:06,650 INFO L479 AbstractCegarLoop]: Abstraction has 1835 states and 2254 transitions. [2020-09-25 13:34:06,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:34:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2254 transitions. [2020-09-25 13:34:06,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 13:34:06,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:06,656 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:06,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:06,656 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash -12142129, now seen corresponding path program 1 times [2020-09-25 13:34:06,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:06,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307480512] [2020-09-25 13:34:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:06,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 13:34:07,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-09-25 13:34:07,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-09-25 13:34:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:34:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:07,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:07,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:34:07,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:34:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 13:34:07,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:34:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:07,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 13:34:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:07,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:34:07,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:34:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 13:34:07,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307480512] [2020-09-25 13:34:07,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:07,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:07,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322282015] [2020-09-25 13:34:07,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:07,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:07,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:07,611 INFO L87 Difference]: Start difference. First operand 1835 states and 2254 transitions. Second operand 5 states. [2020-09-25 13:34:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:09,538 INFO L93 Difference]: Finished difference Result 3804 states and 4785 transitions. [2020-09-25 13:34:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:09,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-09-25 13:34:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:09,553 INFO L225 Difference]: With dead ends: 3804 [2020-09-25 13:34:09,554 INFO L226 Difference]: Without dead ends: 2139 [2020-09-25 13:34:09,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-09-25 13:34:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2020-09-25 13:34:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2020-09-25 13:34:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2605 transitions. [2020-09-25 13:34:09,612 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2605 transitions. Word has length 247 [2020-09-25 13:34:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:09,613 INFO L479 AbstractCegarLoop]: Abstraction has 2137 states and 2605 transitions. [2020-09-25 13:34:09,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2605 transitions. [2020-09-25 13:34:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 13:34:09,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:09,618 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:09,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:09,619 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:09,619 INFO L82 PathProgramCache]: Analyzing trace with hash -580927032, now seen corresponding path program 1 times [2020-09-25 13:34:09,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:09,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479127785] [2020-09-25 13:34:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:14,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-25 13:34:14,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:34:14,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:14,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 13:34:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:14,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:14,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:34:14,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:14,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:15,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 13:34:15,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:15,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 13:34:15,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:15,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:34:15,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:15,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 13:34:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 13:34:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:15,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:15,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479127785] [2020-09-25 13:34:15,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:15,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:34:15,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252062850] [2020-09-25 13:34:15,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:34:15,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:15,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:34:15,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:15,654 INFO L87 Difference]: Start difference. First operand 2137 states and 2605 transitions. Second operand 10 states. [2020-09-25 13:34:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:19,898 INFO L93 Difference]: Finished difference Result 6151 states and 7956 transitions. [2020-09-25 13:34:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:34:19,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 256 [2020-09-25 13:34:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:19,922 INFO L225 Difference]: With dead ends: 6151 [2020-09-25 13:34:19,922 INFO L226 Difference]: Without dead ends: 4184 [2020-09-25 13:34:19,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:34:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2020-09-25 13:34:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 4054. [2020-09-25 13:34:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4054 states. [2020-09-25 13:34:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5122 transitions. [2020-09-25 13:34:20,045 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 5122 transitions. Word has length 256 [2020-09-25 13:34:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:20,045 INFO L479 AbstractCegarLoop]: Abstraction has 4054 states and 5122 transitions. [2020-09-25 13:34:20,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:34:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 5122 transitions. [2020-09-25 13:34:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 13:34:20,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:20,052 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:20,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:34:20,053 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1316407212, now seen corresponding path program 1 times [2020-09-25 13:34:20,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:20,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665316314] [2020-09-25 13:34:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 13:34:25,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:34:25,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:25,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:34:25,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-09-25 13:34:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:25,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:25,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:25,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:25,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:34:25,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:25,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:25,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:25,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:25,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 13:34:25,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:25,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 13:34:25,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:25,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:25,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:25,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:25,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:34:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:25,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 13:34:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:25,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-25 13:34:26,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665316314] [2020-09-25 13:34:26,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:26,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:34:26,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708751622] [2020-09-25 13:34:26,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:34:26,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:26,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:34:26,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:26,106 INFO L87 Difference]: Start difference. First operand 4054 states and 5122 transitions. Second operand 10 states.