/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=0.4 --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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:37,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:37,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:37,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:37,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:37,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:37,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:37,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:37,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:37,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:37,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:37,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:37,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:37,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:37,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:37,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:37,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:37,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:37,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:37,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:37,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:37,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:37,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:37,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:37,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:37,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:37,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:37,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:37,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:37,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:37,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:37,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:37,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:37,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:37,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:37,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:37,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:37,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:37,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:37,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:37,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:37,510 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 05:37:37,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:37,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:37,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:37,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:37,541 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:37,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:37,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:37,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:37,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:37,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:37,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:37,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:37,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:37,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:37,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:37,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:37,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:37,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:37,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:37,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:37,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:37,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:37,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:37,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:37,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:37,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:37,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:37,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:37,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:37,546 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:37:38,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:38,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:38,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:38,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:38,042 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:38,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 05:37:38,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bfa4b487/9fac092627c9499cb6c76855099a705d/FLAGbfa101def [2020-09-25 05:37:38,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:38,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 05:37:38,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bfa4b487/9fac092627c9499cb6c76855099a705d/FLAGbfa101def [2020-09-25 05:37:39,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bfa4b487/9fac092627c9499cb6c76855099a705d [2020-09-25 05:37:39,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:39,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:39,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:39,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:39,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:39,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df9f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39, skipping insertion in model container [2020-09-25 05:37:39,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:39,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:39,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:39,668 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:39,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:39,896 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:39,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39 WrapperNode [2020-09-25 05:37:39,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:39,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:39,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:39,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:39,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:40,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:40,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:40,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:40,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:40,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (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 05:37:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:41,441 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:41,442 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:41,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:41 BoogieIcfgContainer [2020-09-25 05:37:41,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:41,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:41,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:41,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:41,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:39" (1/3) ... [2020-09-25 05:37:41,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5eeb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:41, skipping insertion in model container [2020-09-25 05:37:41,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39" (2/3) ... [2020-09-25 05:37:41,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5eeb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:41, skipping insertion in model container [2020-09-25 05:37:41,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:41" (3/3) ... [2020-09-25 05:37:41,462 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 05:37:41,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:41,485 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:41,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:41,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:41,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:41,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:41,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:41,550 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:41,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:41,550 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:41,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:41,586 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:37:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 05:37:41,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:41,609 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] [2020-09-25 05:37:41,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:41,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 05:37:41,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:41,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802701458] [2020-09-25 05:37:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:44,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 05:37:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:37:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-25 05:37:46,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 05:37:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:37:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:47,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:47,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:37:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:47,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:47,333 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 05:37:47,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802701458] [2020-09-25 05:37:47,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:47,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:47,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534339186] [2020-09-25 05:37:47,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:47,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:47,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:47,369 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:37:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:49,995 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 05:37:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:50,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 05:37:50,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:50,034 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 05:37:50,034 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 05:37:50,044 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 05:37:50,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 05:37:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 05:37:50,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 05:37:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 05:37:50,163 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 129 [2020-09-25 05:37:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:50,165 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 05:37:50,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 05:37:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 05:37:50,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:50,176 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] [2020-09-25 05:37:50,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:50,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:50,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1321748602, now seen corresponding path program 1 times [2020-09-25 05:37:50,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:50,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217759474] [2020-09-25 05:37:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 05:37:55,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:37:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:37:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:37:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 05:37:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:55,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:55,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:55,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:55,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:37:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:55,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:55,575 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 05:37:55,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217759474] [2020-09-25 05:37:55,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:55,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:55,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543264587] [2020-09-25 05:37:55,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:55,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:55,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:55,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:55,581 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 05:37:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:57,712 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 05:37:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:57,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 05:37:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:57,725 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 05:37:57,725 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 05:37:57,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 05:37:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 05:37:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 05:37:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 05:37:57,777 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 147 [2020-09-25 05:37:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:57,778 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 05:37:57,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 05:37:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:37:57,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:57,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:57,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:57,788 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:57,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1793356799, now seen corresponding path program 1 times [2020-09-25 05:37:57,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:57,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863634194] [2020-09-25 05:37:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:38:02,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:38:02,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 05:38:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 05:38:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:02,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:02,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:02,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:38:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:38:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:03,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:38:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:03,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863634194] [2020-09-25 05:38:03,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:03,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:03,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974536139] [2020-09-25 05:38:03,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:03,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:03,107 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 6 states. [2020-09-25 05:38:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:05,786 INFO L93 Difference]: Finished difference Result 2820 states and 3635 transitions. [2020-09-25 05:38:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:05,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 05:38:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:05,801 INFO L225 Difference]: With dead ends: 2820 [2020-09-25 05:38:05,801 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 05:38:05,808 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 05:38:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 05:38:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1115. [2020-09-25 05:38:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 05:38:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1346 transitions. [2020-09-25 05:38:05,854 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1346 transitions. Word has length 163 [2020-09-25 05:38:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:05,854 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1346 transitions. [2020-09-25 05:38:05,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1346 transitions. [2020-09-25 05:38:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 05:38:05,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:05,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:05,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:05,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1758187067, now seen corresponding path program 1 times [2020-09-25 05:38:05,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:05,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97130839] [2020-09-25 05:38:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 05:38:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:38:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:10,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:38:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:38:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:38:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:11,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:11,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:38:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:11,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:11,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:38:11,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:11,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:38:11,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:11,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:38:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:11,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97130839] [2020-09-25 05:38:11,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:11,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:38:11,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088562709] [2020-09-25 05:38:11,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:38:11,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:11,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:38:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:38:11,612 INFO L87 Difference]: Start difference. First operand 1115 states and 1346 transitions. Second operand 9 states. [2020-09-25 05:38:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:16,260 INFO L93 Difference]: Finished difference Result 3322 states and 4266 transitions. [2020-09-25 05:38:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:38:16,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-09-25 05:38:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:16,278 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 05:38:16,278 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 05:38:16,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:38:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 05:38:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2084. [2020-09-25 05:38:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-09-25 05:38:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2489 transitions. [2020-09-25 05:38:16,375 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2489 transitions. Word has length 167 [2020-09-25 05:38:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:16,375 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 2489 transitions. [2020-09-25 05:38:16,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:38:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2489 transitions. [2020-09-25 05:38:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 05:38:16,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:16,390 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:16,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:16,391 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:16,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1831307549, now seen corresponding path program 1 times [2020-09-25 05:38:16,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:16,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090819745] [2020-09-25 05:38:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 05:38:21,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 05:38:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:38:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:21,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:38:21,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:21,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:38:21,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:21,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:21,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:38:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:38:21,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:21,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:38:21,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:21,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 05:38:21,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 05:38:21,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090819745] [2020-09-25 05:38:21,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:21,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:21,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548472431] [2020-09-25 05:38:21,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:21,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:21,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:21,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:21,680 INFO L87 Difference]: Start difference. First operand 2084 states and 2489 transitions. Second operand 5 states. [2020-09-25 05:38:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:23,585 INFO L93 Difference]: Finished difference Result 5277 states and 6498 transitions. [2020-09-25 05:38:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:23,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 05:38:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:23,607 INFO L225 Difference]: With dead ends: 5277 [2020-09-25 05:38:23,607 INFO L226 Difference]: Without dead ends: 3215 [2020-09-25 05:38:23,614 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 05:38:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2020-09-25 05:38:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3146. [2020-09-25 05:38:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-09-25 05:38:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 3729 transitions. [2020-09-25 05:38:23,729 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 3729 transitions. Word has length 191 [2020-09-25 05:38:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:23,730 INFO L479 AbstractCegarLoop]: Abstraction has 3146 states and 3729 transitions. [2020-09-25 05:38:23,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 3729 transitions. [2020-09-25 05:38:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 05:38:23,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:23,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:23,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:23,742 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash -276703914, now seen corresponding path program 1 times [2020-09-25 05:38:23,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:23,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665099844] [2020-09-25 05:38:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:25,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 05:38:28,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:28,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 05:38:28,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:38:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:38:28,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:28,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:28,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:38:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 05:38:28,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 05:38:28,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:28,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:38:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 05:38:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:28,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:38:29,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:38:29,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:38:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:29,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665099844] [2020-09-25 05:38:29,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:29,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:29,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651189900] [2020-09-25 05:38:29,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:29,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:29,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:29,114 INFO L87 Difference]: Start difference. First operand 3146 states and 3729 transitions. Second operand 7 states.