/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=1.0 --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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:47,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:47,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:47,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:47,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:47,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:47,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:47,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:47,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:47,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:47,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:47,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:47,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:47,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:47,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:47,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:47,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:47,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:47,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:47,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:47,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:47,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:47,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:47,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:47,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:47,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:47,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:47,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:47,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:47,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:47,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:47,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:47,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:47,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:47,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:47,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:47,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:47,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:47,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:47,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:47,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:47,233 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 09:00:47,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:47,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:47,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:47,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:47,297 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:47,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:47,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:47,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:47,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:47,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:47,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:47,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:47,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:47,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:47,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:47,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:47,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:47,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:47,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:47,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:47,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:47,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:47,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:47,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:47,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:47,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:47,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:47,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:47,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:47,302 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:00:47,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:47,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:47,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:47,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:47,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:47,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 09:00:47,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/549870014/7c97a21c43314c08b83aa48d53c67460/FLAG222ec7b61 [2020-09-25 09:00:48,544 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:48,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 09:00:48,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/549870014/7c97a21c43314c08b83aa48d53c67460/FLAG222ec7b61 [2020-09-25 09:00:48,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/549870014/7c97a21c43314c08b83aa48d53c67460 [2020-09-25 09:00:48,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:48,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:48,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:48,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:48,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:48,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:48, skipping insertion in model container [2020-09-25 09:00:48,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:48" (1/1) ... [2020-09-25 09:00:48,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:48,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:49,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:49,435 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:49,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:49,733 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:49,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49 WrapperNode [2020-09-25 09:00:49,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:49,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:49,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:49,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:49,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (1/1) ... [2020-09-25 09:00:49,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:49,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:49,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:49,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:49,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (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 09:00:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:49,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:51,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:51,303 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:51,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:51 BoogieIcfgContainer [2020-09-25 09:00:51,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:51,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:51,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:51,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:51,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:48" (1/3) ... [2020-09-25 09:00:51,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb4dacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:51, skipping insertion in model container [2020-09-25 09:00:51,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:49" (2/3) ... [2020-09-25 09:00:51,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb4dacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:51, skipping insertion in model container [2020-09-25 09:00:51,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:51" (3/3) ... [2020-09-25 09:00:51,324 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 09:00:51,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:51,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:51,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:51,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:51,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:51,405 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:51,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:51,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:51,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:51,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:51,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:51,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 09:00:51,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:51,465 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] [2020-09-25 09:00:51,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:51,472 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 09:00:51,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:51,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493777724] [2020-09-25 09:00:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 09:00:56,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:00:56,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:56,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:00:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:00:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:57,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:00:57,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:57,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:57,165 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 09:00:57,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493777724] [2020-09-25 09:00:57,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:57,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:57,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435163250] [2020-09-25 09:00:57,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:57,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:57,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:57,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:57,210 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:59,342 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 09:00:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:59,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 09:00:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:59,375 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 09:00:59,375 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 09:00:59,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 09:00:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 09:00:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 09:00:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 09:00:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 09:00:59,503 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 143 [2020-09-25 09:00:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:59,505 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 09:00:59,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 09:00:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 09:00:59,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:59,513 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:00:59,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:59,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:59,515 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-25 09:00:59,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:59,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571175305] [2020-09-25 09:00:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:04,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:01:04,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:01:04,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:04,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:04,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:04,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 09:01:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:04,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:04,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:01:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:04,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:04,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:01:04,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:04,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:04,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:04,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:04,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:04,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:01:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:04,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571175305] [2020-09-25 09:01:04,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:04,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:04,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439183747] [2020-09-25 09:01:04,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:04,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:04,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:04,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:04,905 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 6 states. [2020-09-25 09:01:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:06,996 INFO L93 Difference]: Finished difference Result 1531 states and 1899 transitions. [2020-09-25 09:01:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:06,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-25 09:01:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:07,004 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 09:01:07,004 INFO L226 Difference]: Without dead ends: 950 [2020-09-25 09:01:07,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-09-25 09:01:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 897. [2020-09-25 09:01:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-09-25 09:01:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1093 transitions. [2020-09-25 09:01:07,054 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1093 transitions. Word has length 160 [2020-09-25 09:01:07,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:07,055 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1093 transitions. [2020-09-25 09:01:07,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1093 transitions. [2020-09-25 09:01:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 09:01:07,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:07,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:07,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:07,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1554589942, now seen corresponding path program 1 times [2020-09-25 09:01:07,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:07,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693853608] [2020-09-25 09:01:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:07,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:12,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 09:01:12,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:01:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 09:01:12,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:12,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:01:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:01:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:01:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:12,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:12,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:01:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:12,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:01:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:12,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:12,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:12,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:12,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 09:01:12,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:12,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:12,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:01:12,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:12,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 09:01:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:12,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:01:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:01:12,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693853608] [2020-09-25 09:01:12,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:12,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:12,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442986379] [2020-09-25 09:01:12,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:12,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:12,738 INFO L87 Difference]: Start difference. First operand 897 states and 1093 transitions. Second operand 7 states. [2020-09-25 09:01:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:15,177 INFO L93 Difference]: Finished difference Result 2152 states and 2722 transitions. [2020-09-25 09:01:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:15,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 09:01:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:15,188 INFO L225 Difference]: With dead ends: 2152 [2020-09-25 09:01:15,188 INFO L226 Difference]: Without dead ends: 1279 [2020-09-25 09:01:15,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 09:01:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-09-25 09:01:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1077. [2020-09-25 09:01:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 09:01:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 09:01:15,244 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 205 [2020-09-25 09:01:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:15,244 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 09:01:15,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 09:01:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 09:01:15,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:15,251 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] [2020-09-25 09:01:15,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:15,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:15,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 09:01:15,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:15,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260016877] [2020-09-25 09:01:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:20,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 09:01:20,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:01:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:20,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:01:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:01:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:01:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:20,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:20,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:20,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:01:20,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:20,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:20,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:20,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:20,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:01:20,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:20,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:20,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:20,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:01:20,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 09:01:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:20,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:01:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:20,820 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 09:01:20,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260016877] [2020-09-25 09:01:20,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:20,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:01:20,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554178749] [2020-09-25 09:01:20,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:20,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:20,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:20,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:20,828 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 09:01:21,504 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 09:01:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:24,247 INFO L93 Difference]: Finished difference Result 2883 states and 3642 transitions. [2020-09-25 09:01:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:01:24,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 09:01:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:24,259 INFO L225 Difference]: With dead ends: 2883 [2020-09-25 09:01:24,260 INFO L226 Difference]: Without dead ends: 1830 [2020-09-25 09:01:24,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:01:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2020-09-25 09:01:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1706. [2020-09-25 09:01:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-09-25 09:01:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2090 transitions. [2020-09-25 09:01:24,325 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2090 transitions. Word has length 212 [2020-09-25 09:01:24,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:24,326 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 2090 transitions. [2020-09-25 09:01:24,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2090 transitions. [2020-09-25 09:01:24,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 09:01:24,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:24,335 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, 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] [2020-09-25 09:01:24,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:24,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:24,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1545156718, now seen corresponding path program 1 times [2020-09-25 09:01:24,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:24,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071204241] [2020-09-25 09:01:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:29,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 09:01:29,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:01:29,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:01:29,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:29,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 09:01:29,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:01:29,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:29,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:29,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:29,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:29,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:29,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:29,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:29,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:29,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:29,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:29,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:29,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 09:01:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 09:01:29,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:29,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:01:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:01:29,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071204241] [2020-09-25 09:01:29,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:29,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:29,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255048083] [2020-09-25 09:01:29,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:29,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:29,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:29,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:29,790 INFO L87 Difference]: Start difference. First operand 1706 states and 2090 transitions. Second operand 5 states. [2020-09-25 09:01:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:31,797 INFO L93 Difference]: Finished difference Result 3970 states and 4895 transitions. [2020-09-25 09:01:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:31,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-09-25 09:01:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:31,810 INFO L225 Difference]: With dead ends: 3970 [2020-09-25 09:01:31,811 INFO L226 Difference]: Without dead ends: 1637 [2020-09-25 09:01:31,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 09:01:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-09-25 09:01:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1627. [2020-09-25 09:01:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1627 states. [2020-09-25 09:01:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 1965 transitions. [2020-09-25 09:01:31,879 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 1965 transitions. Word has length 227 [2020-09-25 09:01:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:31,880 INFO L479 AbstractCegarLoop]: Abstraction has 1627 states and 1965 transitions. [2020-09-25 09:01:31,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 1965 transitions. [2020-09-25 09:01:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 09:01:31,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:31,892 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, 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] [2020-09-25 09:01:31,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:31,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:31,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1062084122, now seen corresponding path program 1 times [2020-09-25 09:01:31,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:31,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117326082] [2020-09-25 09:01:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking...