/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:55,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:55,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:55,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:55,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:55,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:55,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:55,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:55,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:55,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:55,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:55,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:55,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:55,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:55,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:55,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:55,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:55,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:55,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:55,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:55,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:55,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:55,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:55,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:55,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:55,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:55,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:55,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:55,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:55,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:55,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:55,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:55,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:55,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:55,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:55,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:55,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:55,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:55,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:55,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:55,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:55,530 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 09:01:55,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:55,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:55,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:55,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:55,582 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:55,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:55,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:55,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:55,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:55,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:55,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:55,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:55,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:55,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:55,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:55,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:55,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:55,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:55,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:55,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:55,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:55,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:55,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:55,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:55,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:55,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:55,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:55,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:55,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:55,590 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:01:56,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:56,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:56,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:56,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:56,107 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:56,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 09:01:56,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c4c52d6a/f706fd45e77b4303be268deb571dd2c6/FLAGf15fda7c9 [2020-09-25 09:01:56,813 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:56,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 09:01:56,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c4c52d6a/f706fd45e77b4303be268deb571dd2c6/FLAGf15fda7c9 [2020-09-25 09:01:57,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c4c52d6a/f706fd45e77b4303be268deb571dd2c6 [2020-09-25 09:01:57,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:57,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:57,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:57,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:57,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:57,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:57,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57, skipping insertion in model container [2020-09-25 09:01:57,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:57,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:57,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:57,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:57,691 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:57,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:57,925 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:57,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57 WrapperNode [2020-09-25 09:01:57,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:57,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:57,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:57,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:57,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:57,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:57,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:57,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:58,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:58,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:58,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (1/1) ... [2020-09-25 09:01:58,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:58,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:58,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:58,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:58,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (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 09:01:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:58,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:59,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:59,503 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:59,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:59 BoogieIcfgContainer [2020-09-25 09:01:59,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:59,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:59,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:59,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:59,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:57" (1/3) ... [2020-09-25 09:01:59,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:59, skipping insertion in model container [2020-09-25 09:01:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:57" (2/3) ... [2020-09-25 09:01:59,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c7164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:59, skipping insertion in model container [2020-09-25 09:01:59,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:59" (3/3) ... [2020-09-25 09:01:59,522 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-09-25 09:01:59,534 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:59,545 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:59,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:59,606 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:59,606 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:59,606 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:59,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:59,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:59,607 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:59,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:59,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:01:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 09:01:59,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:59,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:59,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:59,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:59,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2114164186, now seen corresponding path program 1 times [2020-09-25 09:01:59,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:59,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760628592] [2020-09-25 09:01:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:04,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:02:04,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:02:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:02:04,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:04,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:02:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 09:02:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:02:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:05,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:05,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:05,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:02:05,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:05,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:05,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:02:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:05,370 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 09:02:05,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760628592] [2020-09-25 09:02:05,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:05,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:02:05,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102242498] [2020-09-25 09:02:05,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:05,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:05,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:05,407 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 09:02:08,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:08,409 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 09:02:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:02:08,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 09:02:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:08,439 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 09:02:08,439 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 09:02:08,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 09:02:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 09:02:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 09:02:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 09:02:08,603 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 161 [2020-09-25 09:02:08,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:08,605 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 09:02:08,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 09:02:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 09:02:08,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:08,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:08,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:08,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash -880282106, now seen corresponding path program 1 times [2020-09-25 09:02:08,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:08,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25867543] [2020-09-25 09:02:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:08,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 09:02:13,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:02:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:02:13,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:13,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:02:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:02:13,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 09:02:13,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:13,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:13,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:13,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:02:13,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:13,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:13,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:02:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:14,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:14,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:02:14,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:14,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:14,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:02:14,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25867543] [2020-09-25 09:02:14,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:14,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:02:14,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706573706] [2020-09-25 09:02:14,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:02:14,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:14,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:02:14,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:14,104 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 6 states. [2020-09-25 09:02:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:16,042 INFO L93 Difference]: Finished difference Result 2205 states and 2866 transitions. [2020-09-25 09:02:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:02:16,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-09-25 09:02:16,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:16,060 INFO L225 Difference]: With dead ends: 2205 [2020-09-25 09:02:16,061 INFO L226 Difference]: Without dead ends: 1349 [2020-09-25 09:02:16,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-25 09:02:16,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1332. [2020-09-25 09:02:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1332 states. [2020-09-25 09:02:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1684 transitions. [2020-09-25 09:02:16,176 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1684 transitions. Word has length 179 [2020-09-25 09:02:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:16,177 INFO L479 AbstractCegarLoop]: Abstraction has 1332 states and 1684 transitions. [2020-09-25 09:02:16,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:02:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1684 transitions. [2020-09-25 09:02:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 09:02:16,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:16,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:16,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:02:16,187 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1103327617, now seen corresponding path program 1 times [2020-09-25 09:02:16,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:16,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282781995] [2020-09-25 09:02:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:21,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 09:02:21,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:02:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:02:21,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:21,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:02:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:02:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 09:02:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:21,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:21,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:21,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:02:21,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:21,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:21,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:02:21,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:21,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:02:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 09:02:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:21,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:02:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:02:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:22,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282781995] [2020-09-25 09:02:22,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:22,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:02:22,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716458982] [2020-09-25 09:02:22,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:02:22,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:22,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:02:22,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:02:22,098 INFO L87 Difference]: Start difference. First operand 1332 states and 1684 transitions. Second operand 12 states. [2020-09-25 09:02:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:26,458 INFO L93 Difference]: Finished difference Result 3820 states and 5078 transitions. [2020-09-25 09:02:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:02:26,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-09-25 09:02:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:26,469 INFO L225 Difference]: With dead ends: 3820 [2020-09-25 09:02:26,470 INFO L226 Difference]: Without dead ends: 1440 [2020-09-25 09:02:26,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:02:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-09-25 09:02:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1423. [2020-09-25 09:02:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-09-25 09:02:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1748 transitions. [2020-09-25 09:02:26,527 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1748 transitions. Word has length 195 [2020-09-25 09:02:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:26,527 INFO L479 AbstractCegarLoop]: Abstraction has 1423 states and 1748 transitions. [2020-09-25 09:02:26,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:02:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1748 transitions. [2020-09-25 09:02:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 09:02:26,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:26,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:26,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:02:26,544 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1228146501, now seen corresponding path program 1 times [2020-09-25 09:02:26,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:26,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82931604] [2020-09-25 09:02:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:26,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:30,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 09:02:31,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:02:31,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:02:31,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:02:31,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:02:31,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 09:02:31,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:31,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:02:31,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:31,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:31,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:31,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 09:02:31,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:31,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:02:31,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:32,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82931604] [2020-09-25 09:02:32,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:32,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:02:32,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70467168] [2020-09-25 09:02:32,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:02:32,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:32,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:02:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:32,179 INFO L87 Difference]: Start difference. First operand 1423 states and 1748 transitions. Second operand 8 states. [2020-09-25 09:02:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:36,018 INFO L93 Difference]: Finished difference Result 3954 states and 5082 transitions. [2020-09-25 09:02:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:02:36,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 09:02:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:36,033 INFO L225 Difference]: With dead ends: 3954 [2020-09-25 09:02:36,033 INFO L226 Difference]: Without dead ends: 2442 [2020-09-25 09:02:36,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:02:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-09-25 09:02:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2386. [2020-09-25 09:02:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-09-25 09:02:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 2892 transitions. [2020-09-25 09:02:36,121 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 2892 transitions. Word has length 199 [2020-09-25 09:02:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:36,122 INFO L479 AbstractCegarLoop]: Abstraction has 2386 states and 2892 transitions. [2020-09-25 09:02:36,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:02:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 2892 transitions. [2020-09-25 09:02:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 09:02:36,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:36,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:36,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:36,132 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1714662301, now seen corresponding path program 1 times [2020-09-25 09:02:36,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:36,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100363354] [2020-09-25 09:02:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:41,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:41,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 09:02:41,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:02:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:02:41,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:41,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 09:02:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 09:02:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:41,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:41,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:41,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:02:41,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:41,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:41,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:41,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:02:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:02:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:02:41,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 09:02:41,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:41,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:41,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:02:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:02:41,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100363354] [2020-09-25 09:02:41,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:41,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:41,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888520063] [2020-09-25 09:02:41,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:41,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:41,443 INFO L87 Difference]: Start difference. First operand 2386 states and 2892 transitions. Second operand 5 states. [2020-09-25 09:02:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:42,963 INFO L93 Difference]: Finished difference Result 2408 states and 2927 transitions. [2020-09-25 09:02:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:42,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-25 09:02:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:42,976 INFO L225 Difference]: With dead ends: 2408 [2020-09-25 09:02:42,976 INFO L226 Difference]: Without dead ends: 2406 [2020-09-25 09:02:42,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:02:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2020-09-25 09:02:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2386. [2020-09-25 09:02:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-09-25 09:02:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 2891 transitions. [2020-09-25 09:02:43,037 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 2891 transitions. Word has length 223 [2020-09-25 09:02:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:43,038 INFO L479 AbstractCegarLoop]: Abstraction has 2386 states and 2891 transitions. [2020-09-25 09:02:43,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 2891 transitions. [2020-09-25 09:02:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 09:02:43,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:43,049 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, 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] [2020-09-25 09:02:43,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:43,049 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2144981535, now seen corresponding path program 1 times [2020-09-25 09:02:43,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:43,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375138810] [2020-09-25 09:02:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking...