/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=0.8 --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/Problem02_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:30,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:30,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:30,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:30,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:30,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:30,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:30,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:30,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:30,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:30,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:30,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:30,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:30,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:30,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:30,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:30,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:30,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:30,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:30,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:30,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:30,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:30,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:30,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:30,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:30,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:30,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:30,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:30,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:30,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:30,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:30,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:30,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:30,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:30,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:30,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:30,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:30,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:30,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:30,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:30,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:30,324 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 07:54:30,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:30,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:30,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:30,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:30,357 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:30,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:30,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:30,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:30,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:30,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:30,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:30,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:30,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:30,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:30,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:30,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:30,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:30,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:30,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:30,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:30,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:30,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:30,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:30,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:30,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:30,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:30,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:30,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:30,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:30,362 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:54:30,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:30,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:30,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:30,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:30,835 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:30,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 07:54:30,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a38d44507/9846646aeb9f42aa932e6d1bba50795b/FLAG0c4329312 [2020-09-25 07:54:31,525 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:31,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 07:54:31,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a38d44507/9846646aeb9f42aa932e6d1bba50795b/FLAG0c4329312 [2020-09-25 07:54:31,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a38d44507/9846646aeb9f42aa932e6d1bba50795b [2020-09-25 07:54:31,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:31,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:31,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:31,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:31,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:31,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:31" (1/1) ... [2020-09-25 07:54:31,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8f57a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:31, skipping insertion in model container [2020-09-25 07:54:31,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:31" (1/1) ... [2020-09-25 07:54:31,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:31,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:32,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:32,349 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:32,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:32,614 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:32,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32 WrapperNode [2020-09-25 07:54:32,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:32,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:32,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:32,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:32,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (1/1) ... [2020-09-25 07:54:32,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:32,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:32,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:32,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:32,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (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 07:54:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:54:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:54:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:54:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:54:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:54:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:54:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:54:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:54:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:54:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:54:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:54:34,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:54:34,233 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:54:34,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:34 BoogieIcfgContainer [2020-09-25 07:54:34,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:54:34,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:54:34,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:54:34,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:54:34,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:31" (1/3) ... [2020-09-25 07:54:34,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ca6a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:34, skipping insertion in model container [2020-09-25 07:54:34,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:32" (2/3) ... [2020-09-25 07:54:34,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ca6a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:34, skipping insertion in model container [2020-09-25 07:54:34,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:34" (3/3) ... [2020-09-25 07:54:34,253 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 07:54:34,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:54:34,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:54:34,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:54:34,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:54:34,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:54:34,335 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:54:34,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:54:34,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:54:34,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:54:34,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:54:34,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:54:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:54:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 07:54:34,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:34,392 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] [2020-09-25 07:54:34,393 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:34,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:34,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 07:54:34,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:34,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168826162] [2020-09-25 07:54:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:39,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:39,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 07:54:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:54:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 07:54:39,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:39,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:54:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:54:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:54:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:54:40,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:40,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:40,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:40,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:54:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:54:40,091 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 07:54:40,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168826162] [2020-09-25 07:54:40,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:40,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:54:40,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562910079] [2020-09-25 07:54:40,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:54:40,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:54:40,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:54:40,130 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:54:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:42,498 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 07:54:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:54:42,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 07:54:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:42,547 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 07:54:42,547 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 07:54:42,563 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 07:54:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 07:54:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 07:54:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 07:54:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 07:54:42,738 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-25 07:54:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:42,740 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 07:54:42,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:54:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 07:54:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 07:54:42,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:42,759 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] [2020-09-25 07:54:42,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:54:42,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:42,761 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 07:54:42,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:42,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254576349] [2020-09-25 07:54:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:47,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:54:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:54:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:54:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:47,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:54:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:54:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:54:47,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:48,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:48,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:54:48,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:48,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 07:54:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:48,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:48,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:48,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:54:48,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:48,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:54:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:48,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254576349] [2020-09-25 07:54:48,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:48,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:48,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424664511] [2020-09-25 07:54:48,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:48,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:48,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:48,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:48,133 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 07:54:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:49,938 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 07:54:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:49,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 07:54:49,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:49,960 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 07:54:49,960 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 07:54:49,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 07:54:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 07:54:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 07:54:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 07:54:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 07:54:50,019 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 134 [2020-09-25 07:54:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:50,020 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 07:54:50,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 07:54:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 07:54:50,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:50,026 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] [2020-09-25 07:54:50,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:50,026 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:50,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1960543630, now seen corresponding path program 1 times [2020-09-25 07:54:50,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:50,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861139235] [2020-09-25 07:54:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:50,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:50,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:55,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:54:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:54:55,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:55,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:54:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:54:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:54:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:55,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:55,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:55,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:54:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:55,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:55,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:55,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:55,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:54:55,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:54:55,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:55,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:54:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:55,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861139235] [2020-09-25 07:54:55,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:55,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:55,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627290585] [2020-09-25 07:54:55,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:55,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:55,315 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 07:54:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:57,471 INFO L93 Difference]: Finished difference Result 2094 states and 2618 transitions. [2020-09-25 07:54:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:57,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 07:54:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:57,480 INFO L225 Difference]: With dead ends: 2094 [2020-09-25 07:54:57,480 INFO L226 Difference]: Without dead ends: 1145 [2020-09-25 07:54:57,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 07:54:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-25 07:54:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-09-25 07:54:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-09-25 07:54:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1356 transitions. [2020-09-25 07:54:57,545 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1356 transitions. Word has length 135 [2020-09-25 07:54:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:57,547 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1356 transitions. [2020-09-25 07:54:57,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1356 transitions. [2020-09-25 07:54:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 07:54:57,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:57,554 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:54:57,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:54:57,556 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:57,556 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-25 07:54:57,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:57,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427701302] [2020-09-25 07:54:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 07:55:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:55:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4915 [2020-09-25 07:55:02,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:02,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:55:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:55:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:02,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:02,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:02,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:02,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:02,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:02,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:55:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:55:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:02,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427701302] [2020-09-25 07:55:02,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:02,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:55:02,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661494669] [2020-09-25 07:55:02,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:55:02,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:02,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:55:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:02,842 INFO L87 Difference]: Start difference. First operand 1123 states and 1356 transitions. Second operand 6 states. [2020-09-25 07:55:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:05,289 INFO L93 Difference]: Finished difference Result 2955 states and 3730 transitions. [2020-09-25 07:55:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:05,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 07:55:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:05,310 INFO L225 Difference]: With dead ends: 2955 [2020-09-25 07:55:05,310 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 07:55:05,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:05,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 07:55:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1783. [2020-09-25 07:55:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-09-25 07:55:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2204 transitions. [2020-09-25 07:55:05,421 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2204 transitions. Word has length 138 [2020-09-25 07:55:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:05,422 INFO L479 AbstractCegarLoop]: Abstraction has 1783 states and 2204 transitions. [2020-09-25 07:55:05,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:55:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2204 transitions. [2020-09-25 07:55:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 07:55:05,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:05,435 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:55:05,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:05,435 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:05,436 INFO L82 PathProgramCache]: Analyzing trace with hash -453985806, now seen corresponding path program 1 times [2020-09-25 07:55:05,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:05,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284651852] [2020-09-25 07:55:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 07:55:07,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:07,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-09-25 07:55:07,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 07:55:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:55:07,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:55:07,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:55:07,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:55:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:07,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284651852] [2020-09-25 07:55:07,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:07,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:55:07,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243090865] [2020-09-25 07:55:07,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:55:07,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:07,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:55:07,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:07,652 INFO L87 Difference]: Start difference. First operand 1783 states and 2204 transitions. Second operand 6 states. [2020-09-25 07:55:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:10,503 INFO L93 Difference]: Finished difference Result 4899 states and 6453 transitions. [2020-09-25 07:55:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:55:10,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-09-25 07:55:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:10,527 INFO L225 Difference]: With dead ends: 4899 [2020-09-25 07:55:10,527 INFO L226 Difference]: Without dead ends: 3138 [2020-09-25 07:55:10,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 07:55:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-09-25 07:55:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2851. [2020-09-25 07:55:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2020-09-25 07:55:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 3591 transitions. [2020-09-25 07:55:10,630 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 3591 transitions. Word has length 142 [2020-09-25 07:55:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:10,631 INFO L479 AbstractCegarLoop]: Abstraction has 2851 states and 3591 transitions. [2020-09-25 07:55:10,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:55:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 3591 transitions. [2020-09-25 07:55:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 07:55:10,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:10,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:10,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:10,643 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:10,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:10,643 INFO L82 PathProgramCache]: Analyzing trace with hash 771470164, now seen corresponding path program 1 times [2020-09-25 07:55:10,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:10,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168401910] [2020-09-25 07:55:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:55:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 07:55:15,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:15,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:55:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:55:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:15,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:55:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:15,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:15,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 07:55:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 07:55:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:15,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:15,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:55:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:16,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168401910] [2020-09-25 07:55:16,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:16,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:16,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682265321] [2020-09-25 07:55:16,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:16,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:16,007 INFO L87 Difference]: Start difference. First operand 2851 states and 3591 transitions. Second operand 7 states. [2020-09-25 07:55:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:18,478 INFO L93 Difference]: Finished difference Result 8419 states and 10987 transitions. [2020-09-25 07:55:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:55:18,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-25 07:55:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:18,525 INFO L225 Difference]: With dead ends: 8419 [2020-09-25 07:55:18,526 INFO L226 Difference]: Without dead ends: 5590 [2020-09-25 07:55:18,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:18,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2020-09-25 07:55:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5211. [2020-09-25 07:55:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5211 states. [2020-09-25 07:55:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 6597 transitions. [2020-09-25 07:55:18,773 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 6597 transitions. Word has length 164 [2020-09-25 07:55:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:18,774 INFO L479 AbstractCegarLoop]: Abstraction has 5211 states and 6597 transitions. [2020-09-25 07:55:18,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 6597 transitions. [2020-09-25 07:55:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:55:18,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:18,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:18,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:55:18,794 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 979375644, now seen corresponding path program 1 times [2020-09-25 07:55:18,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:18,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479116733] [2020-09-25 07:55:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking...