/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=0.2 --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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:59,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:59,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:59,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:59,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:59,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:59,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:59,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:59,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:59,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:59,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:59,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:59,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:59,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:59,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:59,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:59,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:59,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:59,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:59,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:59,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:59,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:59,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:59,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:59,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:59,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:59,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:59,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:59,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:59,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:59,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:59,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:59,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:59,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:59,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:59,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:59,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:59,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:59,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:59,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:59,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:59,537 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 04:24:59,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:59,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:59,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:59,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:59,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:59,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:59,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:59,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:59,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:59,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:59,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:59,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:59,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:59,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:59,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:59,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:59,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:59,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:59,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:59,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:59,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:59,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:59,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:59,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:59,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:59,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:59,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:59,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:59,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:59,595 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=0.2;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:25:00,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:00,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:00,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:00,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:00,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:00,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 04:25:00,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d56f8977/305db961440f46ff87d909d73e609135/FLAG5abd38820 [2020-09-25 04:25:00,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:00,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 04:25:00,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d56f8977/305db961440f46ff87d909d73e609135/FLAG5abd38820 [2020-09-25 04:25:01,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d56f8977/305db961440f46ff87d909d73e609135 [2020-09-25 04:25:01,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:01,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:01,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:01,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:01,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:01,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01, skipping insertion in model container [2020-09-25 04:25:01,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:01,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:01,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:01,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:01,809 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:01,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:01,982 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:01,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01 WrapperNode [2020-09-25 04:25:01,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:01,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:01,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:01,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:02,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (1/1) ... [2020-09-25 04:25:02,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:02,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:02,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:02,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:02,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (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 04:25:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:02,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:03,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:03,807 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:03,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:03 BoogieIcfgContainer [2020-09-25 04:25:03,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:03,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:03,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:03,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:03,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:01" (1/3) ... [2020-09-25 04:25:03,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe8249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:03, skipping insertion in model container [2020-09-25 04:25:03,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:01" (2/3) ... [2020-09-25 04:25:03,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe8249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:03, skipping insertion in model container [2020-09-25 04:25:03,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:03" (3/3) ... [2020-09-25 04:25:03,827 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 04:25:03,839 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:03,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:03,874 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:03,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:03,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:03,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:03,909 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:03,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:03,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:03,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:03,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 04:25:03,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:03,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:03,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 04:25:03,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:03,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428992317] [2020-09-25 04:25:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:09,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:09,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:25:09,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:09,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:25:09,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:09,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:09,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:09,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 04:25:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:25:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:09,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:09,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:09,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:25:09,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:09,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:09,641 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 04:25:09,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428992317] [2020-09-25 04:25:09,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:09,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:09,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530999735] [2020-09-25 04:25:09,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:09,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:09,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:09,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:09,675 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:11,996 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:25:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:11,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 04:25:11,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:12,041 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:25:12,042 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:25:12,056 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 04:25:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:25:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:25:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:12,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:25:12,173 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 131 [2020-09-25 04:25:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:12,175 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:25:12,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:25:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:25:12,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:12,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:12,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:12,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:12,184 INFO L82 PathProgramCache]: Analyzing trace with hash 926344477, now seen corresponding path program 1 times [2020-09-25 04:25:12,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:12,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893371736] [2020-09-25 04:25:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:17,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 04:25:17,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:25:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:25:17,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:17,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:25:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:25:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:25:17,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:17,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:17,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 04:25:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:17,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:17,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893371736] [2020-09-25 04:25:17,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:17,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:17,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974472381] [2020-09-25 04:25:17,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:17,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:17,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:17,525 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:25:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:19,817 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 04:25:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:19,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 04:25:19,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:19,830 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 04:25:19,831 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 04:25:19,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:25:19,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 04:25:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 04:25:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 04:25:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1175 transitions. [2020-09-25 04:25:19,911 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1175 transitions. Word has length 152 [2020-09-25 04:25:19,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:19,913 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1175 transitions. [2020-09-25 04:25:19,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:19,914 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1175 transitions. [2020-09-25 04:25:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 04:25:19,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:19,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:19,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:19,921 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:19,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:19,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1561438327, now seen corresponding path program 1 times [2020-09-25 04:25:19,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:19,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262647767] [2020-09-25 04:25:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:23,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:24,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 04:25:24,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:25:24,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:24,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:25:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:25,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:25,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:25:25,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:25,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:25,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:25,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:25,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:25:25,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:25:25,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:25,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:25:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:25,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262647767] [2020-09-25 04:25:25,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:25,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:25,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636138247] [2020-09-25 04:25:25,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:25,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:25,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:25,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:25,251 INFO L87 Difference]: Start difference. First operand 966 states and 1175 transitions. Second operand 7 states. [2020-09-25 04:25:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:27,559 INFO L93 Difference]: Finished difference Result 2712 states and 3474 transitions. [2020-09-25 04:25:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:27,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 04:25:27,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:27,573 INFO L225 Difference]: With dead ends: 2712 [2020-09-25 04:25:27,573 INFO L226 Difference]: Without dead ends: 1770 [2020-09-25 04:25:27,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:25:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-09-25 04:25:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1637. [2020-09-25 04:25:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 04:25:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2020 transitions. [2020-09-25 04:25:27,667 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2020 transitions. Word has length 153 [2020-09-25 04:25:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:27,667 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2020 transitions. [2020-09-25 04:25:27,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2020 transitions. [2020-09-25 04:25:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 04:25:27,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:27,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:27,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:27,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-25 04:25:27,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:27,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326123779] [2020-09-25 04:25:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:31,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:32,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 04:25:32,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:25:32,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:25:32,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:32,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:32,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 04:25:32,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 04:25:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:32,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:32,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:25:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:32,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:33,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:33,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:25:33,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 04:25:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:33,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:25:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:33,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326123779] [2020-09-25 04:25:33,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:33,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:33,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285986666] [2020-09-25 04:25:33,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:33,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:33,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:33,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:33,112 INFO L87 Difference]: Start difference. First operand 1637 states and 2020 transitions. Second operand 5 states. [2020-09-25 04:25:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:35,125 INFO L93 Difference]: Finished difference Result 4469 states and 5737 transitions. [2020-09-25 04:25:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:35,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 04:25:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:35,142 INFO L225 Difference]: With dead ends: 4469 [2020-09-25 04:25:35,142 INFO L226 Difference]: Without dead ends: 2856 [2020-09-25 04:25:35,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-09-25 04:25:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2507. [2020-09-25 04:25:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2507 states. [2020-09-25 04:25:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3127 transitions. [2020-09-25 04:25:35,251 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3127 transitions. Word has length 178 [2020-09-25 04:25:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:35,252 INFO L479 AbstractCegarLoop]: Abstraction has 2507 states and 3127 transitions. [2020-09-25 04:25:35,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3127 transitions. [2020-09-25 04:25:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:25:35,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:35,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:35,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:35,264 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash 727992105, now seen corresponding path program 1 times [2020-09-25 04:25:35,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:35,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499676290] [2020-09-25 04:25:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 04:25:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:25:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:25:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:25:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:40,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:40,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:40,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:25:40,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:40,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499676290] [2020-09-25 04:25:40,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:40,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:40,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081854875] [2020-09-25 04:25:40,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:40,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:40,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:40,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:40,803 INFO L87 Difference]: Start difference. First operand 2507 states and 3127 transitions. Second operand 7 states. [2020-09-25 04:25:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:43,835 INFO L93 Difference]: Finished difference Result 5705 states and 7496 transitions. [2020-09-25 04:25:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:43,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 04:25:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:43,858 INFO L225 Difference]: With dead ends: 5705 [2020-09-25 04:25:43,859 INFO L226 Difference]: Without dead ends: 3222 [2020-09-25 04:25:43,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2020-09-25 04:25:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2978. [2020-09-25 04:25:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-09-25 04:25:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 3718 transitions. [2020-09-25 04:25:43,972 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 3718 transitions. Word has length 181 [2020-09-25 04:25:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:43,972 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 3718 transitions. [2020-09-25 04:25:43,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 3718 transitions. [2020-09-25 04:25:43,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:25:43,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:43,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:43,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:43,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:43,985 INFO L82 PathProgramCache]: Analyzing trace with hash -807439965, now seen corresponding path program 1 times [2020-09-25 04:25:43,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:43,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025221480] [2020-09-25 04:25:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 04:25:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:25:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:49,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 04:25:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 04:25:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:49,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:49,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:49,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:49,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:49,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:25:49,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:49,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:25:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:25:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:49,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:25:49,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025221480] [2020-09-25 04:25:49,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:49,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:49,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453538814] [2020-09-25 04:25:49,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:49,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:49,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:49,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:49,306 INFO L87 Difference]: Start difference. First operand 2978 states and 3718 transitions. Second operand 5 states.