/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:56,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:56,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:56,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:56,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:56,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:56,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:56,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:56,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:56,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:56,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:56,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:56,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:56,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:56,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:56,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:56,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:56,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:56,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:56,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:56,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:56,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:56,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:56,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:56,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:56,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:56,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:56,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:56,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:56,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:56,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:56,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:56,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:56,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:56,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:56,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:56,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:56,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:56,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:56,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:56,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:56,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:38:56,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:56,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:56,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:56,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:56,502 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:56,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:56,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:56,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:56,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:56,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:56,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:56,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:56,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:56,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:56,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:56,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:56,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:56,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:56,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:56,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:56,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:56,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:56,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:56,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:56,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:56,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:56,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:56,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:56,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:56,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:38:56,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:56,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:56,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:56,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:56,997 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:56,998 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 05:38:57,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52279cd85/6efc9d1b87b7437699343e921b212d64/FLAG7e228e7a1 [2020-09-25 05:38:57,731 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:57,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 05:38:57,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52279cd85/6efc9d1b87b7437699343e921b212d64/FLAG7e228e7a1 [2020-09-25 05:38:57,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52279cd85/6efc9d1b87b7437699343e921b212d64 [2020-09-25 05:38:57,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:57,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:57,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:57,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:57,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:57,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:57" (1/1) ... [2020-09-25 05:38:57,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee0cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:57, skipping insertion in model container [2020-09-25 05:38:57,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:57" (1/1) ... [2020-09-25 05:38:57,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:58,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:58,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:58,580 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:58,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:58,730 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:58,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58 WrapperNode [2020-09-25 05:38:58,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:58,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:58,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:58,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:58,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... [2020-09-25 05:38:58,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:58,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:58,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:58,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:58,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:58,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:58,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:58,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:00,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:00,415 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:00,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:00 BoogieIcfgContainer [2020-09-25 05:39:00,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:00,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:00,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:00,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:00,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:57" (1/3) ... [2020-09-25 05:39:00,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f6eddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:00, skipping insertion in model container [2020-09-25 05:39:00,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:58" (2/3) ... [2020-09-25 05:39:00,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f6eddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:00, skipping insertion in model container [2020-09-25 05:39:00,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:00" (3/3) ... [2020-09-25 05:39:00,435 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 05:39:00,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:00,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:00,483 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:00,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:00,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:00,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:00,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:00,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:00,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:00,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:00,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 05:39:00,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:00,586 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] [2020-09-25 05:39:00,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 05:39:00,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:00,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453239657] [2020-09-25 05:39:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:02,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:39:02,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-09-25 05:39:02,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:02,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:02,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:39:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:02,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:02,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:39:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:02,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:02,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453239657] [2020-09-25 05:39:02,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:02,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:02,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935036006] [2020-09-25 05:39:02,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:02,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:02,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:02,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:02,331 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:04,442 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:39:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:04,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 05:39:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:04,472 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:39:04,472 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:39:04,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:39:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:39:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:39:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:39:04,587 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 73 [2020-09-25 05:39:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:04,588 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:39:04,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:39:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 05:39:04,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:04,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:04,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:04,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:04,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:04,599 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-25 05:39:04,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:04,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179915284] [2020-09-25 05:39:04,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 05:39:09,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:39:09,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:09,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:09,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:39:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:09,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:39:09,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:09,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:09,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 05:39:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:09,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:39:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:10,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179915284] [2020-09-25 05:39:10,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:10,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:10,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526608737] [2020-09-25 05:39:10,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:10,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:10,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:10,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:10,004 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 05:39:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:11,793 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 05:39:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:11,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 05:39:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:11,800 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 05:39:11,801 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 05:39:11,803 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 05:39:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 05:39:11,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 05:39:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 05:39:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 05:39:11,834 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 152 [2020-09-25 05:39:11,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:11,835 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 05:39:11,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 05:39:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 05:39:11,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:11,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:11,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:11,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 05:39:11,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:11,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095720148] [2020-09-25 05:39:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:13,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:16,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 05:39:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:39:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:16,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:16,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:16,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:17,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:17,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:17,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 05:39:17,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:17,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:17,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:17,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095720148] [2020-09-25 05:39:17,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:17,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:17,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975140126] [2020-09-25 05:39:17,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:17,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:17,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:17,304 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 05:39:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:20,305 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 05:39:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:20,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-25 05:39:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:20,329 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 05:39:20,329 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 05:39:20,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 05:39:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 05:39:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 05:39:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2020-09-25 05:39:20,408 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 162 [2020-09-25 05:39:20,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:20,410 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2020-09-25 05:39:20,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2020-09-25 05:39:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 05:39:20,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:20,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:20,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:20,424 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash -86422342, now seen corresponding path program 1 times [2020-09-25 05:39:20,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:20,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932884861] [2020-09-25 05:39:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 05:39:23,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2854 [2020-09-25 05:39:23,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:23,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:39:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:23,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:23,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:23,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:23,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:39:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:39:23,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:23,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:23,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932884861] [2020-09-25 05:39:23,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:23,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:23,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521485044] [2020-09-25 05:39:23,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:23,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:23,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:23,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:23,695 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand 6 states. [2020-09-25 05:39:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:26,637 INFO L93 Difference]: Finished difference Result 3438 states and 4660 transitions. [2020-09-25 05:39:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:26,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-25 05:39:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:26,653 INFO L225 Difference]: With dead ends: 3438 [2020-09-25 05:39:26,653 INFO L226 Difference]: Without dead ends: 2284 [2020-09-25 05:39:26,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2020-09-25 05:39:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2234. [2020-09-25 05:39:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-09-25 05:39:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2951 transitions. [2020-09-25 05:39:26,729 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2951 transitions. Word has length 164 [2020-09-25 05:39:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:26,730 INFO L479 AbstractCegarLoop]: Abstraction has 2234 states and 2951 transitions. [2020-09-25 05:39:26,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2951 transitions. [2020-09-25 05:39:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:39:26,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:26,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:26,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:26,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1651977394, now seen corresponding path program 1 times [2020-09-25 05:39:26,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:26,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360642334] [2020-09-25 05:39:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 05:39:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:39:31,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 05:39:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:39:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:31,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:31,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:31,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:32,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:39:32,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 05:39:32,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:32,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:39:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:32,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360642334] [2020-09-25 05:39:32,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:32,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:32,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79251088] [2020-09-25 05:39:32,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:32,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:32,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:32,119 INFO L87 Difference]: Start difference. First operand 2234 states and 2951 transitions. Second operand 5 states. [2020-09-25 05:39:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:33,952 INFO L93 Difference]: Finished difference Result 5372 states and 7415 transitions. [2020-09-25 05:39:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:33,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 05:39:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:33,974 INFO L225 Difference]: With dead ends: 5372 [2020-09-25 05:39:33,975 INFO L226 Difference]: Without dead ends: 3303 [2020-09-25 05:39:33,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2020-09-25 05:39:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 3291. [2020-09-25 05:39:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3291 states. [2020-09-25 05:39:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4365 transitions. [2020-09-25 05:39:34,100 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4365 transitions. Word has length 181 [2020-09-25 05:39:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:34,101 INFO L479 AbstractCegarLoop]: Abstraction has 3291 states and 4365 transitions. [2020-09-25 05:39:34,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4365 transitions. [2020-09-25 05:39:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 05:39:34,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:34,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:34,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:34,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:34,114 INFO L82 PathProgramCache]: Analyzing trace with hash -678423162, now seen corresponding path program 1 times [2020-09-25 05:39:34,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:34,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464287554] [2020-09-25 05:39:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 05:39:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:39:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:39:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:39,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 05:39:39,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:39,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 05:39:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 05:39:39,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:39,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:39:39,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:39,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464287554] [2020-09-25 05:39:39,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:39,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:39,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949992098] [2020-09-25 05:39:39,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:39,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:39,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:39,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:39,877 INFO L87 Difference]: Start difference. First operand 3291 states and 4365 transitions. Second operand 7 states. [2020-09-25 05:39:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:42,290 INFO L93 Difference]: Finished difference Result 7301 states and 9907 transitions. [2020-09-25 05:39:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:39:42,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-09-25 05:39:42,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:42,314 INFO L225 Difference]: With dead ends: 7301 [2020-09-25 05:39:42,314 INFO L226 Difference]: Without dead ends: 3367 [2020-09-25 05:39:42,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2020-09-25 05:39:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 2967. [2020-09-25 05:39:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2967 states. [2020-09-25 05:39:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3672 transitions. [2020-09-25 05:39:42,436 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3672 transitions. Word has length 299 [2020-09-25 05:39:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:42,437 INFO L479 AbstractCegarLoop]: Abstraction has 2967 states and 3672 transitions. [2020-09-25 05:39:42,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3672 transitions. [2020-09-25 05:39:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-25 05:39:42,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:42,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:39:42,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:42,453 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1283444782, now seen corresponding path program 1 times [2020-09-25 05:39:42,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:42,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747331585] [2020-09-25 05:39:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking...