/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=0.3 --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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:54,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:54,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:54,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:54,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:54,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:54,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:54,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:54,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:54,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:54,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:54,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:54,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:54,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:54,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:54,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:54,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:54,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:54,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:54,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:54,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:54,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:54,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:54,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:54,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:54,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:54,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:54,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:54,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:54,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:54,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:54,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:54,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:54,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:54,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:54,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:54,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:54,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:54,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:54,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:54,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:54,365 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 12:21:54,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:54,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:54,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:54,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:54,422 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:54,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:54,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:54,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:54,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:54,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:54,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:54,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:54,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:54,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:54,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:54,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:54,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:54,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:54,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:54,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:54,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:54,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:54,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:54,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:54,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:54,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:54,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:54,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:54,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:54,429 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:21:54,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:54,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:54,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:54,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:54,956 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:54,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 12:21:55,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42604bb04/eb81e188c6d5461b8deae119f01accea/FLAGb0aadaad4 [2020-09-25 12:21:55,706 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:55,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 12:21:55,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42604bb04/eb81e188c6d5461b8deae119f01accea/FLAGb0aadaad4 [2020-09-25 12:21:55,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42604bb04/eb81e188c6d5461b8deae119f01accea [2020-09-25 12:21:55,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:55,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:55,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:55,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:55,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:55,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:55" (1/1) ... [2020-09-25 12:21:55,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ad0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:55, skipping insertion in model container [2020-09-25 12:21:55,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:55" (1/1) ... [2020-09-25 12:21:55,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:56,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:56,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:56,484 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:56,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:56,771 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:56,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56 WrapperNode [2020-09-25 12:21:56,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:56,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:56,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:56,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:56,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (1/1) ... [2020-09-25 12:21:56,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:57,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:57,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:57,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:57,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (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 12:21:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:57,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:57,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:57,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:58,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:58,886 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:58,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:58 BoogieIcfgContainer [2020-09-25 12:21:58,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:58,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:58,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:58,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:58,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:55" (1/3) ... [2020-09-25 12:21:58,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b16e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:58, skipping insertion in model container [2020-09-25 12:21:58,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:56" (2/3) ... [2020-09-25 12:21:58,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b16e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:58, skipping insertion in model container [2020-09-25 12:21:58,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:58" (3/3) ... [2020-09-25 12:21:58,907 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 12:21:58,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:58,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:58,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:58,992 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:58,992 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:58,992 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:58,993 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:58,993 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:58,993 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:58,993 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:58,993 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 12:21:59,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:59,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:59,063 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:59,070 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 12:21:59,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:59,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365507642] [2020-09-25 12:21:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:22:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:22:04,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:04,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:22:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 12:22:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:22:04,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:04,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:04,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:22:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:04,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:04,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:04,706 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 12:22:04,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365507642] [2020-09-25 12:22:04,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:04,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:22:04,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712706082] [2020-09-25 12:22:04,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:22:04,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:04,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:22:04,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:22:04,780 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:22:07,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:07,223 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 12:22:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:07,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 12:22:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:07,250 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 12:22:07,250 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 12:22:07,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 12:22:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 12:22:07,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 12:22:07,362 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 110 [2020-09-25 12:22:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:07,364 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 12:22:07,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:22:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 12:22:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 12:22:07,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:07,373 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:07,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:07,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:07,374 INFO L82 PathProgramCache]: Analyzing trace with hash 550881368, now seen corresponding path program 1 times [2020-09-25 12:22:07,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:07,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778565291] [2020-09-25 12:22:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:09,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:22:09,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:22:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-09-25 12:22:09,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:09,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:22:09,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 12:22:09,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:09,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:22:09,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:09,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:10,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:22:10,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:10,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:22:10,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:10,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778565291] [2020-09-25 12:22:10,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:10,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:10,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819711653] [2020-09-25 12:22:10,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:10,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:10,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:10,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:10,086 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 12:22:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:12,361 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 12:22:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:12,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 12:22:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:12,369 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 12:22:12,369 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 12:22:12,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 12:22:12,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 12:22:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 12:22:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 12:22:12,420 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 131 [2020-09-25 12:22:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:12,421 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 12:22:12,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 12:22:12,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 12:22:12,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:12,427 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:12,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:12,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:12,428 INFO L82 PathProgramCache]: Analyzing trace with hash 39430160, now seen corresponding path program 1 times [2020-09-25 12:22:12,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:12,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982329726] [2020-09-25 12:22:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:17,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:22:17,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:22:17,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:17,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 12:22:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 12:22:17,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:17,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:17,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:17,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:17,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:17,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:22:17,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:22:17,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:17,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:22:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:17,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982329726] [2020-09-25 12:22:17,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:17,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:17,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765341719] [2020-09-25 12:22:17,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:17,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:17,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:17,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:17,774 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 12:22:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:20,102 INFO L93 Difference]: Finished difference Result 2052 states and 2599 transitions. [2020-09-25 12:22:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:20,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 12:22:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:20,110 INFO L225 Difference]: With dead ends: 2052 [2020-09-25 12:22:20,110 INFO L226 Difference]: Without dead ends: 855 [2020-09-25 12:22:20,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-09-25 12:22:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 843. [2020-09-25 12:22:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2020-09-25 12:22:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1028 transitions. [2020-09-25 12:22:20,145 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1028 transitions. Word has length 140 [2020-09-25 12:22:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:20,146 INFO L479 AbstractCegarLoop]: Abstraction has 843 states and 1028 transitions. [2020-09-25 12:22:20,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1028 transitions. [2020-09-25 12:22:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 12:22:20,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:20,151 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:20,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:20,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:20,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1990952336, now seen corresponding path program 1 times [2020-09-25 12:22:20,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:20,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495810216] [2020-09-25 12:22:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:21,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:25,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:22:25,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 12:22:25,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:25,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:22:25,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 12:22:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:22:25,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:25,816 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-09-25 12:22:26,020 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-09-25 12:22:26,288 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-09-25 12:22:26,541 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2020-09-25 12:22:26,757 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-09-25 12:22:26,950 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 40 [2020-09-25 12:22:27,153 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 36 [2020-09-25 12:22:27,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:27,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:27,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:27,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:22:27,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:27,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:27,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:22:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:27,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:22:27,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 12:22:27,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:27,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:22:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:22:27,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495810216] [2020-09-25 12:22:27,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:27,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:22:27,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818773151] [2020-09-25 12:22:27,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:22:27,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:27,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:22:27,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:22:27,769 INFO L87 Difference]: Start difference. First operand 843 states and 1028 transitions. Second operand 16 states. [2020-09-25 12:22:29,730 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 12:22:29,973 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-25 12:22:30,954 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 115 [2020-09-25 12:22:31,539 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-09-25 12:22:32,273 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 109 [2020-09-25 12:22:32,713 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 106 [2020-09-25 12:22:33,555 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 101 [2020-09-25 12:22:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:34,480 INFO L93 Difference]: Finished difference Result 2047 states and 2599 transitions. [2020-09-25 12:22:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:22:34,481 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 164 [2020-09-25 12:22:34,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:34,492 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 12:22:34,492 INFO L226 Difference]: Without dead ends: 1228 [2020-09-25 12:22:34,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:22:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2020-09-25 12:22:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1061. [2020-09-25 12:22:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-09-25 12:22:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1282 transitions. [2020-09-25 12:22:34,553 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1282 transitions. Word has length 164 [2020-09-25 12:22:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:34,553 INFO L479 AbstractCegarLoop]: Abstraction has 1061 states and 1282 transitions. [2020-09-25 12:22:34,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:22:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1282 transitions. [2020-09-25 12:22:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 12:22:34,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:34,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:34,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:34,563 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:34,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:34,564 INFO L82 PathProgramCache]: Analyzing trace with hash 926609686, now seen corresponding path program 1 times [2020-09-25 12:22:34,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:34,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004348117] [2020-09-25 12:22:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:22:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:22:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:39,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:39,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:39,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:22:39,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:39,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:39,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:22:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:40,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 12:22:40,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 12:22:40,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:40,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 12:22:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:40,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004348117] [2020-09-25 12:22:40,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:40,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:22:40,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638591733] [2020-09-25 12:22:40,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:22:40,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:22:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:40,226 INFO L87 Difference]: Start difference. First operand 1061 states and 1282 transitions. Second operand 7 states. [2020-09-25 12:22:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:42,859 INFO L93 Difference]: Finished difference Result 2760 states and 3437 transitions. [2020-09-25 12:22:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:22:42,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 12:22:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:42,873 INFO L225 Difference]: With dead ends: 2760 [2020-09-25 12:22:42,873 INFO L226 Difference]: Without dead ends: 1723 [2020-09-25 12:22:42,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:22:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-09-25 12:22:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-09-25 12:22:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-09-25 12:22:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2011 transitions. [2020-09-25 12:22:42,956 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2011 transitions. Word has length 176 [2020-09-25 12:22:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:42,957 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2011 transitions. [2020-09-25 12:22:42,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:22:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2011 transitions. [2020-09-25 12:22:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 12:22:42,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:42,970 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:42,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:42,971 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:42,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1319899365, now seen corresponding path program 1 times [2020-09-25 12:22:42,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:42,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835316584] [2020-09-25 12:22:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking...