/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:49,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:49,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:49,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:49,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:49,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:49,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:49,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:49,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:49,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:49,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:49,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:49,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:49,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:49,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:49,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:49,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:49,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:49,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:49,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:49,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:49,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:49,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:49,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:49,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:49,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:49,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:49,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:49,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:49,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:49,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:49,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:49,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:49,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:49,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:49,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:49,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:49,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:49,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:49,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:49,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:49,482 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 07:52:49,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:49,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:49,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:49,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:49,512 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:49,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:49,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:49,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:49,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:49,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:49,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:49,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:49,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:49,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:49,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:49,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:49,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:49,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:49,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:49,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:49,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:49,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:49,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:49,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:49,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:49,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:49,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:49,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:49,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:49,517 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 07:52:49,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:49,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:49,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:49,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:49,997 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:49,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 07:52:50,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/778409978/83e8d736bdb74c80be05a1a1b2e31835/FLAGff643ce78 [2020-09-25 07:52:50,731 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:50,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-25 07:52:50,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/778409978/83e8d736bdb74c80be05a1a1b2e31835/FLAGff643ce78 [2020-09-25 07:52:50,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/778409978/83e8d736bdb74c80be05a1a1b2e31835 [2020-09-25 07:52:50,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:50,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:51,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:51,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:51,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:51,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:50" (1/1) ... [2020-09-25 07:52:51,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:51, skipping insertion in model container [2020-09-25 07:52:51,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:50" (1/1) ... [2020-09-25 07:52:51,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:51,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:51,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:51,764 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:52,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:52,022 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:52,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52 WrapperNode [2020-09-25 07:52:52,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:52,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:52,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:52,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:52,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (1/1) ... [2020-09-25 07:52:52,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:52,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:52,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:52,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:52,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (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 07:52:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:52,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:52,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:53,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:53,606 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:53,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:53 BoogieIcfgContainer [2020-09-25 07:52:53,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:53,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:53,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:53,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:53,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:50" (1/3) ... [2020-09-25 07:52:53,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:53, skipping insertion in model container [2020-09-25 07:52:53,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:52" (2/3) ... [2020-09-25 07:52:53,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:53, skipping insertion in model container [2020-09-25 07:52:53,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:53" (3/3) ... [2020-09-25 07:52:53,627 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-25 07:52:53,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:53,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:53,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:53,725 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:53,725 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:53,725 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:53,725 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:53,726 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:53,726 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:53,726 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:53,726 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:52:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 07:52:53,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:53,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:53,787 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-25 07:52:53,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:53,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 07:52:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:54,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 07:52:59,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:52:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:52:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:52:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 07:52:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:59,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:59,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:59,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:59,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:52:59,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:59,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:59,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:59,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:52:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:59,574 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 07:52:59,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 07:52:59,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:59,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:52:59,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342055818] [2020-09-25 07:52:59,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:59,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:59,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:59,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:59,620 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 07:53:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:02,422 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 07:53:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:53:02,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 07:53:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:02,451 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 07:53:02,452 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 07:53:02,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:02,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 07:53:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 07:53:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 07:53:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 07:53:02,583 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 152 [2020-09-25 07:53:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:02,584 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 07:53:02,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 07:53:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:53:02,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:02,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:02,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:53:02,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:02,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:02,595 INFO L82 PathProgramCache]: Analyzing trace with hash 676695293, now seen corresponding path program 1 times [2020-09-25 07:53:02,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:02,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449315285] [2020-09-25 07:53:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 07:53:07,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:53:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:53:07,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:53:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 07:53:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:07,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:07,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:07,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:53:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:53:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:07,918 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 07:53:07,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449315285] [2020-09-25 07:53:07,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:07,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:07,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710639732] [2020-09-25 07:53:07,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:07,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:07,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:07,922 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 07:53:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:09,860 INFO L93 Difference]: Finished difference Result 1623 states and 2082 transitions. [2020-09-25 07:53:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:09,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 07:53:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:09,874 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 07:53:09,875 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 07:53:09,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:09,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 07:53:09,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 968. [2020-09-25 07:53:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 968 states. [2020-09-25 07:53:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1232 transitions. [2020-09-25 07:53:09,925 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1232 transitions. Word has length 170 [2020-09-25 07:53:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:09,926 INFO L479 AbstractCegarLoop]: Abstraction has 968 states and 1232 transitions. [2020-09-25 07:53:09,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1232 transitions. [2020-09-25 07:53:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 07:53:09,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:09,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:09,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:53:09,932 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:09,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1868326385, now seen corresponding path program 1 times [2020-09-25 07:53:09,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:09,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586997545] [2020-09-25 07:53:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 07:53:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:53:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:53:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:14,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 07:53:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 07:53:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:15,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:15,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:15,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:15,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:15,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:15,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:15,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:15,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:53:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:15,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:53:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:15,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586997545] [2020-09-25 07:53:15,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:15,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:15,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777968904] [2020-09-25 07:53:15,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:15,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:15,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:15,305 INFO L87 Difference]: Start difference. First operand 968 states and 1232 transitions. Second operand 5 states. [2020-09-25 07:53:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:17,598 INFO L93 Difference]: Finished difference Result 2423 states and 3188 transitions. [2020-09-25 07:53:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:17,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 07:53:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:17,614 INFO L225 Difference]: With dead ends: 2423 [2020-09-25 07:53:17,614 INFO L226 Difference]: Without dead ends: 1477 [2020-09-25 07:53:17,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2020-09-25 07:53:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1426. [2020-09-25 07:53:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-09-25 07:53:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1751 transitions. [2020-09-25 07:53:17,683 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1751 transitions. Word has length 190 [2020-09-25 07:53:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:17,684 INFO L479 AbstractCegarLoop]: Abstraction has 1426 states and 1751 transitions. [2020-09-25 07:53:17,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1751 transitions. [2020-09-25 07:53:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 07:53:17,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:17,699 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:17,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:53:17,699 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:17,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1346453927, now seen corresponding path program 1 times [2020-09-25 07:53:17,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:17,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326819060] [2020-09-25 07:53:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:17,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:18,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:22,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:22,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 07:53:22,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 07:53:22,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:22,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 07:53:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 07:53:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:22,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:22,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:22,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:22,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:22,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:22,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:22,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:22,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:22,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:53:22,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:53:22,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:22,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:22,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:53:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:53:23,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:53:23,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:23,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:23,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:53:23,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 07:53:23,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326819060] [2020-09-25 07:53:23,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:23,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:23,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715844641] [2020-09-25 07:53:23,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:23,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:23,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:23,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:23,115 INFO L87 Difference]: Start difference. First operand 1426 states and 1751 transitions. Second operand 5 states. [2020-09-25 07:53:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:24,972 INFO L93 Difference]: Finished difference Result 3448 states and 4434 transitions. [2020-09-25 07:53:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:24,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2020-09-25 07:53:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:24,990 INFO L225 Difference]: With dead ends: 3448 [2020-09-25 07:53:24,990 INFO L226 Difference]: Without dead ends: 2044 [2020-09-25 07:53:24,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-25 07:53:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2031. [2020-09-25 07:53:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-09-25 07:53:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2571 transitions. [2020-09-25 07:53:25,069 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2571 transitions. Word has length 209 [2020-09-25 07:53:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:25,070 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 2571 transitions. [2020-09-25 07:53:25,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2571 transitions. [2020-09-25 07:53:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 07:53:25,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:25,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:25,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:25,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:25,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2119389814, now seen corresponding path program 1 times [2020-09-25 07:53:25,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:25,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860020603] [2020-09-25 07:53:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 07:53:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:53:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:53:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:30,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:53:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:53:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:30,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:30,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:30,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:30,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:53:30,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:30,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:53:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:30,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:30,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:53:30,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:30,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:30,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:30,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:53:30,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:53:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:30,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:30,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 07:53:30,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:30,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:53:30,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:30,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:53:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:53:30,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860020603] [2020-09-25 07:53:30,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:30,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:30,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467790983] [2020-09-25 07:53:30,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:30,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:30,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:30,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:30,424 INFO L87 Difference]: Start difference. First operand 2031 states and 2571 transitions. Second operand 7 states. [2020-09-25 07:53:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:32,782 INFO L93 Difference]: Finished difference Result 5532 states and 7414 transitions. [2020-09-25 07:53:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:53:32,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 07:53:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:32,804 INFO L225 Difference]: With dead ends: 5532 [2020-09-25 07:53:32,804 INFO L226 Difference]: Without dead ends: 3523 [2020-09-25 07:53:32,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 07:53:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2020-09-25 07:53:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 3419. [2020-09-25 07:53:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3419 states. [2020-09-25 07:53:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 4310 transitions. [2020-09-25 07:53:32,931 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 4310 transitions. Word has length 216 [2020-09-25 07:53:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:32,931 INFO L479 AbstractCegarLoop]: Abstraction has 3419 states and 4310 transitions. [2020-09-25 07:53:32,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 4310 transitions. [2020-09-25 07:53:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 07:53:32,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:32,946 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:32,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:32,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:32,947 INFO L82 PathProgramCache]: Analyzing trace with hash 101728031, now seen corresponding path program 1 times [2020-09-25 07:53:32,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:32,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184691075] [2020-09-25 07:53:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:36,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking...