/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:29,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:29,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:29,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:29,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:29,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:29,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:29,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:29,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:29,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:29,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:29,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:29,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:29,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:29,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:29,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:29,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:29,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:29,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:29,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:29,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:29,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:29,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:29,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:29,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:29,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:29,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:29,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:29,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:29,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:29,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:29,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:29,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:29,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:29,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:29,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:29,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:29,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:29,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:29,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:29,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:29,545 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 11:14:29,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:29,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:29,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:29,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:29,574 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:29,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:29,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:29,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:29,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:29,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:29,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:29,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:29,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:29,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:29,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:29,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:29,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:29,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:29,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:29,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:29,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:29,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:29,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:29,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:29,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:29,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:29,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:29,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:29,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:29,578 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:14:30,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:30,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:30,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:30,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:30,076 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:30,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 11:14:30,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/427c8c084/02111c45e676443bb87b48b668dc8264/FLAG262f62c2a [2020-09-25 11:14:30,826 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:30,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 11:14:30,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/427c8c084/02111c45e676443bb87b48b668dc8264/FLAG262f62c2a [2020-09-25 11:14:31,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/427c8c084/02111c45e676443bb87b48b668dc8264 [2020-09-25 11:14:31,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:31,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:31,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:31,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:31,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:31,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:31,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31, skipping insertion in model container [2020-09-25 11:14:31,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:31,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:31,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:31,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:31,685 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:31,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:31,920 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:31,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31 WrapperNode [2020-09-25 11:14:31,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:31,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:31,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:31,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:31,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:31,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:31,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:31,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:31,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:32,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:32,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (1/1) ... [2020-09-25 11:14:32,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:32,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:32,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:32,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:32,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (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 11:14:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:32,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:32,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:33,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:33,458 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:33,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:33 BoogieIcfgContainer [2020-09-25 11:14:33,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:33,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:33,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:33,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:33,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:31" (1/3) ... [2020-09-25 11:14:33,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:33, skipping insertion in model container [2020-09-25 11:14:33,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:31" (2/3) ... [2020-09-25 11:14:33,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:33, skipping insertion in model container [2020-09-25 11:14:33,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:33" (3/3) ... [2020-09-25 11:14:33,477 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 11:14:33,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:33,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:33,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:33,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:33,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:33,560 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:33,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:33,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:33,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:33,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:33,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 11:14:33,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:33,614 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] [2020-09-25 11:14:33,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:33,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:33,623 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 11:14:33,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:33,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 11:14:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:38,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:38,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 11:14:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:14:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:14:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:38,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:14:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 11:14:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:14:39,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:39,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:39,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:39,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 11:14:39,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:39,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:14:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:39,328 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 11:14:39,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 11:14:39,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:14:39,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:14:39,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992793675] [2020-09-25 11:14:39,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:39,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:39,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:39,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:39,373 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 11:14:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:41,669 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 11:14:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:41,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 11:14:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:41,698 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 11:14:41,698 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 11:14:41,711 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 11:14:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 11:14:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 11:14:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:14:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 11:14:41,846 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-25 11:14:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:41,850 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 11:14:41,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 11:14:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 11:14:41,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:41,868 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:41,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:41,870 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1116167648, now seen corresponding path program 1 times [2020-09-25 11:14:41,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:41,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907199984] [2020-09-25 11:14:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:45,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 11:14:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3733 [2020-09-25 11:14:45,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:45,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 11:14:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 11:14:45,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:14:45,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:45,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:45,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:45,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:14:45,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:45,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:14:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:45,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907199984] [2020-09-25 11:14:45,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:45,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:45,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600439549] [2020-09-25 11:14:45,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:45,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:45,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:45,954 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 11:14:47,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:47,781 INFO L93 Difference]: Finished difference Result 1531 states and 1909 transitions. [2020-09-25 11:14:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:47,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 11:14:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:47,792 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 11:14:47,793 INFO L226 Difference]: Without dead ends: 952 [2020-09-25 11:14:47,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-09-25 11:14:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 889. [2020-09-25 11:14:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 11:14:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1076 transitions. [2020-09-25 11:14:47,867 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1076 transitions. Word has length 133 [2020-09-25 11:14:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:47,868 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1076 transitions. [2020-09-25 11:14:47,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1076 transitions. [2020-09-25 11:14:47,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 11:14:47,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:47,899 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:14:47,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:14:47,899 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:47,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:47,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1479903223, now seen corresponding path program 1 times [2020-09-25 11:14:47,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:47,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630937568] [2020-09-25 11:14:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 11:14:52,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:14:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:14:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:52,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 11:14:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 11:14:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:53,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:53,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:53,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:14:53,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:14:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:53,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:14:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:53,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630937568] [2020-09-25 11:14:53,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:53,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:53,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720005178] [2020-09-25 11:14:53,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:53,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:53,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:53,185 INFO L87 Difference]: Start difference. First operand 889 states and 1076 transitions. Second operand 5 states. [2020-09-25 11:14:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:55,021 INFO L93 Difference]: Finished difference Result 2141 states and 2675 transitions. [2020-09-25 11:14:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:55,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 11:14:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:55,034 INFO L225 Difference]: With dead ends: 2141 [2020-09-25 11:14:55,035 INFO L226 Difference]: Without dead ends: 1276 [2020-09-25 11:14:55,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-09-25 11:14:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1175. [2020-09-25 11:14:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-09-25 11:14:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1457 transitions. [2020-09-25 11:14:55,097 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1457 transitions. Word has length 137 [2020-09-25 11:14:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:55,099 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1457 transitions. [2020-09-25 11:14:55,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1457 transitions. [2020-09-25 11:14:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 11:14:55,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:55,105 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:14:55,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:14:55,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash -762171496, now seen corresponding path program 1 times [2020-09-25 11:14:55,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:55,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596808942] [2020-09-25 11:14:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:55,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:00,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:00,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 11:15:00,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:15:00,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:00,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 11:15:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 11:15:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:00,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:00,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:00,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:15:00,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:00,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:00,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:00,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:15:00,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:15:00,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:00,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:00,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:15:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:00,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596808942] [2020-09-25 11:15:00,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:00,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:00,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814053451] [2020-09-25 11:15:00,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:00,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:00,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:00,449 INFO L87 Difference]: Start difference. First operand 1175 states and 1457 transitions. Second operand 5 states. [2020-09-25 11:15:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:02,357 INFO L93 Difference]: Finished difference Result 2944 states and 3773 transitions. [2020-09-25 11:15:02,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:02,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 11:15:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:02,375 INFO L225 Difference]: With dead ends: 2944 [2020-09-25 11:15:02,375 INFO L226 Difference]: Without dead ends: 1793 [2020-09-25 11:15:02,381 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 11:15:02,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-09-25 11:15:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1747. [2020-09-25 11:15:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1747 states. [2020-09-25 11:15:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2186 transitions. [2020-09-25 11:15:02,458 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2186 transitions. Word has length 142 [2020-09-25 11:15:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:02,458 INFO L479 AbstractCegarLoop]: Abstraction has 1747 states and 2186 transitions. [2020-09-25 11:15:02,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2186 transitions. [2020-09-25 11:15:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 11:15:02,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:02,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:15:02,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:15:02,470 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:02,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1436243427, now seen corresponding path program 1 times [2020-09-25 11:15:02,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:02,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560464896] [2020-09-25 11:15:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:04,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:07,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 11:15:07,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:07,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:15:07,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:07,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:07,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:15:07,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 11:15:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:15:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:07,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:07,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:15:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:15:07,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:07,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:15:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:15:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:07,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:15:07,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 11:15:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:07,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:15:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:15:08,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560464896] [2020-09-25 11:15:08,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:08,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:15:08,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475100432] [2020-09-25 11:15:08,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:15:08,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:08,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:15:08,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:08,134 INFO L87 Difference]: Start difference. First operand 1747 states and 2186 transitions. Second operand 6 states. [2020-09-25 11:15:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:10,470 INFO L93 Difference]: Finished difference Result 4040 states and 5341 transitions. [2020-09-25 11:15:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:15:10,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-25 11:15:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:10,489 INFO L225 Difference]: With dead ends: 4040 [2020-09-25 11:15:10,490 INFO L226 Difference]: Without dead ends: 2458 [2020-09-25 11:15:10,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 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 11:15:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-09-25 11:15:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1923. [2020-09-25 11:15:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2020-09-25 11:15:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2347 transitions. [2020-09-25 11:15:10,623 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2347 transitions. Word has length 190 [2020-09-25 11:15:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:10,623 INFO L479 AbstractCegarLoop]: Abstraction has 1923 states and 2347 transitions. [2020-09-25 11:15:10,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:15:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2347 transitions. [2020-09-25 11:15:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 11:15:10,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:10,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:10,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:15:10,634 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:10,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1972257998, now seen corresponding path program 1 times [2020-09-25 11:15:10,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:10,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184195236] [2020-09-25 11:15:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 11:15:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:15:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:15:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:15,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 11:15:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 11:15:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:15,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:15,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:15:15,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:15,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:15:15,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:15:15,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:15,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:15:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 11:15:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:16,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 11:15:16,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 11:15:16,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:15:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:15:16,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184195236] [2020-09-25 11:15:16,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:16,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:15:16,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871861922] [2020-09-25 11:15:16,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:15:16,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:15:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:16,112 INFO L87 Difference]: Start difference. First operand 1923 states and 2347 transitions. Second operand 8 states.