/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:34,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:34,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:34,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:34,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:34,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:34,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:34,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:34,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:34,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:34,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:34,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:34,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:34,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:34,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:34,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:34,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:34,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:34,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:34,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:34,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:34,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:34,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:34,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:34,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:34,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:34,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:34,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:34,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:34,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:34,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:34,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:34,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:34,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:34,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:34,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:34,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:34,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:34,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:34,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:34,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:34,350 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 04:24:34,402 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:34,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:34,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:34,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:34,404 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:34,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:34,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:34,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:34,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:34,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:34,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:34,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:34,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:34,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:34,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:34,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:34,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:34,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:34,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:34,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:34,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:34,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:34,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:34,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:34,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:34,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:34,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:34,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:34,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:34,410 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:34,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:34,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:34,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:34,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:34,882 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:34,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 04:24:34,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d4f6d43a/fbf15fdfc9194c23a7356e08aad82b08/FLAG7a0d2699d [2020-09-25 04:24:35,598 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:35,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 04:24:35,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d4f6d43a/fbf15fdfc9194c23a7356e08aad82b08/FLAG7a0d2699d [2020-09-25 04:24:35,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d4f6d43a/fbf15fdfc9194c23a7356e08aad82b08 [2020-09-25 04:24:35,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:35,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:35,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:35,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:35,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:35,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:35" (1/1) ... [2020-09-25 04:24:35,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249e641f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:35, skipping insertion in model container [2020-09-25 04:24:35,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:35" (1/1) ... [2020-09-25 04:24:35,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:35,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:36,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:36,411 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:36,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:36,665 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:36,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36 WrapperNode [2020-09-25 04:24:36,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:36,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:36,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:36,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:36,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (1/1) ... [2020-09-25 04:24:36,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:36,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:36,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:36,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:36,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (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 04:24:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:36,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:36,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:24:36,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:24:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:36,851 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:36,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:38,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:38,130 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:24:38,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:38 BoogieIcfgContainer [2020-09-25 04:24:38,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:38,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:38,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:38,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:38,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:35" (1/3) ... [2020-09-25 04:24:38,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4144d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:38, skipping insertion in model container [2020-09-25 04:24:38,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:36" (2/3) ... [2020-09-25 04:24:38,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4144d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:38, skipping insertion in model container [2020-09-25 04:24:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:38" (3/3) ... [2020-09-25 04:24:38,148 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 04:24:38,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:38,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:38,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:38,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:38,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:38,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:38,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:38,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:38,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:38,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:38,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:24:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:24:38,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:38,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:38,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 04:24:38,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:38,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473995731] [2020-09-25 04:24:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:43,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 04:24:43,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:24:43,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:43,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:24:43,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 04:24:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:43,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:43,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:24:43,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:43,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:43,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:24:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:43,947 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 04:24:43,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473995731] [2020-09-25 04:24:43,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:43,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:43,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205104726] [2020-09-25 04:24:43,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:43,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:43,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:43,985 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:24:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:46,157 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 04:24:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:46,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-25 04:24:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:46,201 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 04:24:46,201 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 04:24:46,213 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 04:24:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 04:24:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 04:24:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 04:24:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 04:24:46,352 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 152 [2020-09-25 04:24:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:46,353 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 04:24:46,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 04:24:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 04:24:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:46,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:24:46,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:46,363 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-25 04:24:46,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:46,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613361828] [2020-09-25 04:24:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:51,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 04:24:51,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:51,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:24:51,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:51,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:24:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:24:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:24:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:24:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:51,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:51,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:51,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:24:51,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:51,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:24:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:24:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:51,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613361828] [2020-09-25 04:24:51,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:51,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:24:51,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408932827] [2020-09-25 04:24:51,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:24:51,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:51,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:24:51,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:24:51,708 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 7 states. [2020-09-25 04:24:54,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:54,031 INFO L93 Difference]: Finished difference Result 1722 states and 2110 transitions. [2020-09-25 04:24:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:24:54,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-25 04:24:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:54,039 INFO L225 Difference]: With dead ends: 1722 [2020-09-25 04:24:54,040 INFO L226 Difference]: Without dead ends: 1082 [2020-09-25 04:24:54,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-09-25 04:24:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1027. [2020-09-25 04:24:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-09-25 04:24:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1221 transitions. [2020-09-25 04:24:54,115 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1221 transitions. Word has length 173 [2020-09-25 04:24:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:54,115 INFO L479 AbstractCegarLoop]: Abstraction has 1027 states and 1221 transitions. [2020-09-25 04:24:54,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:24:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1221 transitions. [2020-09-25 04:24:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 04:24:54,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:54,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:54,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:54,123 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:54,124 INFO L82 PathProgramCache]: Analyzing trace with hash -241490595, now seen corresponding path program 1 times [2020-09-25 04:24:54,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:54,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459599152] [2020-09-25 04:24:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:56,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:59,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:59,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 04:24:59,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:59,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:24:59,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:59,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:24:59,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:24:59,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:59,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:59,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:59,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:59,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:24:59,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:59,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:59,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:24:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:59,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:59,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:24:59,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:59,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:24:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:24:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:59,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:24:59,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:59,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:24:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:24:59,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:24:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:59,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459599152] [2020-09-25 04:24:59,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:59,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:24:59,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9266664] [2020-09-25 04:24:59,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:24:59,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:59,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:24:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:24:59,517 INFO L87 Difference]: Start difference. First operand 1027 states and 1221 transitions. Second operand 8 states. [2020-09-25 04:25:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:03,406 INFO L93 Difference]: Finished difference Result 4010 states and 5248 transitions. [2020-09-25 04:25:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:25:03,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-25 04:25:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:03,428 INFO L225 Difference]: With dead ends: 4010 [2020-09-25 04:25:03,428 INFO L226 Difference]: Without dead ends: 3007 [2020-09-25 04:25:03,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:25:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-09-25 04:25:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2344. [2020-09-25 04:25:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2344 states. [2020-09-25 04:25:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 2877 transitions. [2020-09-25 04:25:03,569 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 2877 transitions. Word has length 190 [2020-09-25 04:25:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:03,570 INFO L479 AbstractCegarLoop]: Abstraction has 2344 states and 2877 transitions. [2020-09-25 04:25:03,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:25:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 2877 transitions. [2020-09-25 04:25:03,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 04:25:03,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:03,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:03,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:03,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:03,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1694189499, now seen corresponding path program 1 times [2020-09-25 04:25:03,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:03,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168641151] [2020-09-25 04:25:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 04:25:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:25:08,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:08,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:25:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:08,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:08,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:08,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:08,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:08,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:08,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:08,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:08,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:08,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:08,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:08,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:08,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:25:08,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:08,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:08,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 04:25:08,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:08,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:25:08,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:08,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168641151] [2020-09-25 04:25:08,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:08,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:08,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882580883] [2020-09-25 04:25:08,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:08,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:08,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:08,951 INFO L87 Difference]: Start difference. First operand 2344 states and 2877 transitions. Second operand 7 states. [2020-09-25 04:25:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:10,997 INFO L93 Difference]: Finished difference Result 5012 states and 6200 transitions. [2020-09-25 04:25:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:10,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-09-25 04:25:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:11,021 INFO L225 Difference]: With dead ends: 5012 [2020-09-25 04:25:11,022 INFO L226 Difference]: Without dead ends: 2702 [2020-09-25 04:25:11,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2020-09-25 04:25:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2495. [2020-09-25 04:25:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2495 states. [2020-09-25 04:25:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 2979 transitions. [2020-09-25 04:25:11,120 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 2979 transitions. Word has length 204 [2020-09-25 04:25:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:11,121 INFO L479 AbstractCegarLoop]: Abstraction has 2495 states and 2979 transitions. [2020-09-25 04:25:11,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 2979 transitions. [2020-09-25 04:25:11,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 04:25:11,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:11,135 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:11,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:11,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:11,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1327822116, now seen corresponding path program 1 times [2020-09-25 04:25:11,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:11,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34050393] [2020-09-25 04:25:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 04:25:16,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:25:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:25:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 04:25:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 04:25:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:25:16,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:16,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:25:16,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:25:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:16,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:16,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:16,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:25:16,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:25:16,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34050393] [2020-09-25 04:25:16,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:16,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:16,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607339397] [2020-09-25 04:25:16,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:16,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:16,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:16,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:16,450 INFO L87 Difference]: Start difference. First operand 2495 states and 2979 transitions. Second operand 5 states. [2020-09-25 04:25:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:18,079 INFO L93 Difference]: Finished difference Result 2544 states and 3031 transitions. [2020-09-25 04:25:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:18,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-09-25 04:25:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:18,095 INFO L225 Difference]: With dead ends: 2544 [2020-09-25 04:25:18,095 INFO L226 Difference]: Without dead ends: 2542 [2020-09-25 04:25:18,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2020-09-25 04:25:18,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2495. [2020-09-25 04:25:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2495 states. [2020-09-25 04:25:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 2978 transitions. [2020-09-25 04:25:18,162 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 2978 transitions. Word has length 211 [2020-09-25 04:25:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:18,162 INFO L479 AbstractCegarLoop]: Abstraction has 2495 states and 2978 transitions. [2020-09-25 04:25:18,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:18,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 2978 transitions. [2020-09-25 04:25:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 04:25:18,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:18,175 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:18,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:18,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:18,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1114180569, now seen corresponding path program 1 times [2020-09-25 04:25:18,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:18,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319953189] [2020-09-25 04:25:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:23,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 04:25:23,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:25:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:25:23,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:23,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 04:25:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:25:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:23,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:23,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:25:23,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:23,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:23,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:25:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:23,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:25:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:23,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:25:23,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:25:23,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:23,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319953189] [2020-09-25 04:25:23,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:23,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:23,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061465361] [2020-09-25 04:25:23,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:23,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:23,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:23,549 INFO L87 Difference]: Start difference. First operand 2495 states and 2978 transitions. Second operand 7 states.