/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:03,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:04,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:04,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:04,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:04,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:04,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:04,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:04,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:04,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:04,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:04,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:04,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:04,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:04,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:04,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:04,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:04,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:04,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:04,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:04,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:04,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:04,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:04,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:04,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:04,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:04,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:04,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:04,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:04,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:04,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:04,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:04,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:04,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:04,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:04,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:04,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:04,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:04,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:04,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:04,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:04,073 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 10:11:04,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:04,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:04,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:04,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:04,099 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:04,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:04,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:04,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:04,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:04,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:04,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:04,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:04,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:04,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:04,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:04,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:04,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:04,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:04,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:04,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:04,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:04,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:04,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:04,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:04,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:04,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:04,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:04,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:04,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:04,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:04,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:04,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:04,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:04,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:04,599 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:04,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 10:11:04,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536434adb/9c5efb84422448fcb78e13f842daab80/FLAGa3eed5c4c [2020-09-25 10:11:05,328 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:05,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 10:11:05,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536434adb/9c5efb84422448fcb78e13f842daab80/FLAGa3eed5c4c [2020-09-25 10:11:05,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536434adb/9c5efb84422448fcb78e13f842daab80 [2020-09-25 10:11:05,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:05,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:05,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:05,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:05,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:05,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef6092a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05, skipping insertion in model container [2020-09-25 10:11:05,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:05,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:06,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:06,310 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:06,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:06,453 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:06,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06 WrapperNode [2020-09-25 10:11:06,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:06,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:06,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:06,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:06,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (1/1) ... [2020-09-25 10:11:06,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:06,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:06,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:06,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:06,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (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 10:11:06,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:06,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:06,668 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:06,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:06,670 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:06,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:08,186 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:08,187 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:08,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:08 BoogieIcfgContainer [2020-09-25 10:11:08,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:08,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:08,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:08,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:08,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:05" (1/3) ... [2020-09-25 10:11:08,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3572d228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:08, skipping insertion in model container [2020-09-25 10:11:08,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:06" (2/3) ... [2020-09-25 10:11:08,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3572d228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:08, skipping insertion in model container [2020-09-25 10:11:08,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:08" (3/3) ... [2020-09-25 10:11:08,209 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 10:11:08,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:08,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:08,265 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:08,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:08,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:08,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:08,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:08,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:08,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:08,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:08,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:11:08,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:08,357 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] [2020-09-25 10:11:08,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 10:11:08,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:08,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278188530] [2020-09-25 10:11:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:08,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:11:09,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 10:11:09,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:09,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:11:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:09,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:09,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:09,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:09,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:09,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 23 [2020-09-25 10:11:09,467 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 10:11:09,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278188530] [2020-09-25 10:11:09,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:09,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:09,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586753201] [2020-09-25 10:11:09,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:09,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:09,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:09,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:09,501 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:11,457 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 10:11:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:11,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-09-25 10:11:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:11,491 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 10:11:11,491 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 10:11:11,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 10:11:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 10:11:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 10:11:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 10:11:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 10:11:11,601 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 71 [2020-09-25 10:11:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:11,602 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 10:11:11,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 10:11:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:11:11,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:11,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:11,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:11,612 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:11,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1195397277, now seen corresponding path program 1 times [2020-09-25 10:11:11,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:11,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069138440] [2020-09-25 10:11:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:11:13,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:13,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2005 [2020-09-25 10:11:13,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 10:11:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:13,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:11:13,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:14,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:14,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:14,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 10:11:14,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:14,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:14,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:14,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:14,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069138440] [2020-09-25 10:11:14,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:14,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:14,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160003143] [2020-09-25 10:11:14,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:14,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:14,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:14,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:14,222 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 10:11:16,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:16,062 INFO L93 Difference]: Finished difference Result 1252 states and 1563 transitions. [2020-09-25 10:11:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:16,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 10:11:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:16,067 INFO L225 Difference]: With dead ends: 1252 [2020-09-25 10:11:16,067 INFO L226 Difference]: Without dead ends: 724 [2020-09-25 10:11:16,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-09-25 10:11:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 697. [2020-09-25 10:11:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 10:11:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 853 transitions. [2020-09-25 10:11:16,105 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 853 transitions. Word has length 151 [2020-09-25 10:11:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:16,106 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 853 transitions. [2020-09-25 10:11:16,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 853 transitions. [2020-09-25 10:11:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 10:11:16,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:16,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:16,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:16,111 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:16,111 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 10:11:16,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:16,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155620484] [2020-09-25 10:11:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:21,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 10:11:21,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:11:21,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:21,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:21,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 10:11:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:21,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:21,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:21,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:21,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:21,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:21,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:21,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 10:11:21,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:21,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:21,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:21,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:21,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155620484] [2020-09-25 10:11:21,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:21,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:21,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614806469] [2020-09-25 10:11:21,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:21,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:21,578 INFO L87 Difference]: Start difference. First operand 697 states and 853 transitions. Second operand 8 states. [2020-09-25 10:11:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:24,910 INFO L93 Difference]: Finished difference Result 1725 states and 2227 transitions. [2020-09-25 10:11:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:11:24,915 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-25 10:11:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:24,931 INFO L225 Difference]: With dead ends: 1725 [2020-09-25 10:11:24,931 INFO L226 Difference]: Without dead ends: 1193 [2020-09-25 10:11:24,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-09-25 10:11:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1066. [2020-09-25 10:11:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-25 10:11:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1291 transitions. [2020-09-25 10:11:25,014 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1291 transitions. Word has length 160 [2020-09-25 10:11:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:25,016 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1291 transitions. [2020-09-25 10:11:25,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1291 transitions. [2020-09-25 10:11:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:11:25,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:25,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:25,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:25,026 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash 111502418, now seen corresponding path program 1 times [2020-09-25 10:11:25,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:25,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382073095] [2020-09-25 10:11:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:28,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:11:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2976 [2020-09-25 10:11:28,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:28,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:11:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:28,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:28,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:28,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:11:28,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:28,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:28,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:28,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:28,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:11:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 10:11:28,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:28,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:11:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:28,482 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:28,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382073095] [2020-09-25 10:11:28,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:28,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:28,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273646475] [2020-09-25 10:11:28,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:28,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:28,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:28,486 INFO L87 Difference]: Start difference. First operand 1066 states and 1291 transitions. Second operand 8 states. [2020-09-25 10:11:31,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:31,846 INFO L93 Difference]: Finished difference Result 2352 states and 3041 transitions. [2020-09-25 10:11:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:31,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 10:11:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:31,858 INFO L225 Difference]: With dead ends: 2352 [2020-09-25 10:11:31,858 INFO L226 Difference]: Without dead ends: 1816 [2020-09-25 10:11:31,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-09-25 10:11:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1715. [2020-09-25 10:11:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-09-25 10:11:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2120 transitions. [2020-09-25 10:11:31,917 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2120 transitions. Word has length 162 [2020-09-25 10:11:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:31,918 INFO L479 AbstractCegarLoop]: Abstraction has 1715 states and 2120 transitions. [2020-09-25 10:11:31,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2120 transitions. [2020-09-25 10:11:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 10:11:31,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:31,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:31,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:31,923 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:31,923 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 10:11:31,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:31,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122872839] [2020-09-25 10:11:31,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:36,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 10:11:36,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:36,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:11:36,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:36,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:36,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:36,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:36,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 10:11:36,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:37,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:37,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:11:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:37,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:37,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:37,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:37,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:11:37,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:37,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122872839] [2020-09-25 10:11:37,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:37,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:37,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369637616] [2020-09-25 10:11:37,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:37,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:37,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:37,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:37,584 INFO L87 Difference]: Start difference. First operand 1715 states and 2120 transitions. Second operand 10 states. [2020-09-25 10:11:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:41,758 INFO L93 Difference]: Finished difference Result 3948 states and 5089 transitions. [2020-09-25 10:11:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:41,759 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 10:11:41,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:41,774 INFO L225 Difference]: With dead ends: 3948 [2020-09-25 10:11:41,774 INFO L226 Difference]: Without dead ends: 2710 [2020-09-25 10:11:41,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:11:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2020-09-25 10:11:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2516. [2020-09-25 10:11:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-09-25 10:11:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3148 transitions. [2020-09-25 10:11:41,853 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3148 transitions. Word has length 179 [2020-09-25 10:11:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:41,854 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 3148 transitions. [2020-09-25 10:11:41,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3148 transitions. [2020-09-25 10:11:41,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 10:11:41,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:41,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:41,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:41,859 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:41,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1262455830, now seen corresponding path program 1 times [2020-09-25 10:11:41,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:41,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097870947] [2020-09-25 10:11:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:41,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:11:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:11:46,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:11:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:11:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:47,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:47,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:11:47,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:47,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:47,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:11:47,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:47,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-09-25 10:11:47,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:11:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:47,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097870947] [2020-09-25 10:11:47,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:47,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:47,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115821754] [2020-09-25 10:11:47,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:47,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:47,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:47,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:47,714 INFO L87 Difference]: Start difference. First operand 2516 states and 3148 transitions. Second operand 12 states. [2020-09-25 10:11:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:50,519 INFO L93 Difference]: Finished difference Result 6034 states and 7764 transitions. [2020-09-25 10:11:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:11:50,520 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 193 [2020-09-25 10:11:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:50,538 INFO L225 Difference]: With dead ends: 6034 [2020-09-25 10:11:50,538 INFO L226 Difference]: Without dead ends: 3571 [2020-09-25 10:11:50,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:11:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3571 states. [2020-09-25 10:11:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3571 to 3397. [2020-09-25 10:11:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-09-25 10:11:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 4119 transitions. [2020-09-25 10:11:50,635 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 4119 transitions. Word has length 193 [2020-09-25 10:11:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:50,636 INFO L479 AbstractCegarLoop]: Abstraction has 3397 states and 4119 transitions. [2020-09-25 10:11:50,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 4119 transitions. [2020-09-25 10:11:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 10:11:50,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:50,649 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, 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] [2020-09-25 10:11:50,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:11:50,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:50,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:50,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1644843063, now seen corresponding path program 1 times [2020-09-25 10:11:50,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:50,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777728548] [2020-09-25 10:11:50,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...