/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:29:56,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:29:56,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:29:56,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:29:56,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:29:56,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:29:56,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:29:56,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:29:56,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:29:56,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:29:56,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:29:56,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:29:56,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:29:56,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:29:56,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:29:56,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:29:56,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:29:56,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:29:56,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:29:56,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:29:56,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:29:56,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:29:56,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:29:56,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:29:56,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:29:56,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:29:56,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:29:56,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:29:56,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:29:56,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:29:56,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:29:56,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:29:56,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:29:56,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:29:56,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:29:56,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:29:56,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:29:56,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:29:56,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:29:56,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:29:56,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:29:56,529 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 14:29:56,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:29:56,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:29:56,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:29:56,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:29:56,578 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:29:56,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:29:56,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:29:56,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:29:56,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:29:56,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:29:56,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:29:56,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:29:56,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:29:56,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:29:56,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:29:56,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:29:56,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:29:56,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:29:56,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:29:56,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:29:56,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:29:56,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:29:56,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:29:56,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:29:56,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:29:56,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:29:56,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:29:56,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:29:56,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:29:56,584 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:29:57,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:29:57,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:29:57,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:29:57,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:29:57,079 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:29:57,080 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-25 14:29:57,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ef84c493/6db38c1609be4812bda4777eb5226819/FLAG335232765 [2020-09-25 14:29:57,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:29:57,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-25 14:29:57,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ef84c493/6db38c1609be4812bda4777eb5226819/FLAG335232765 [2020-09-25 14:29:58,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ef84c493/6db38c1609be4812bda4777eb5226819 [2020-09-25 14:29:58,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:29:58,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:29:58,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:58,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:29:58,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:29:58,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441bb81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58, skipping insertion in model container [2020-09-25 14:29:58,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:29:58,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:29:58,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:58,334 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:29:58,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:58,375 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:29:58,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58 WrapperNode [2020-09-25 14:29:58,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:58,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:29:58,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:29:58,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:29:58,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... [2020-09-25 14:29:58,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:29:58,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:29:58,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:29:58,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:29:58,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:29:58,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:29:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:29:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 14:29:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 14:29:58,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:29:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:29:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:29:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 14:29:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 14:29:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:29:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:29:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:29:58,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:29:58,871 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:29:58,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:58 BoogieIcfgContainer [2020-09-25 14:29:58,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:29:58,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:29:58,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:29:58,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:29:58,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:29:58" (1/3) ... [2020-09-25 14:29:58,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488b707f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:58, skipping insertion in model container [2020-09-25 14:29:58,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:58" (2/3) ... [2020-09-25 14:29:58,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488b707f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:58, skipping insertion in model container [2020-09-25 14:29:58,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:58" (3/3) ... [2020-09-25 14:29:58,901 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-2.c [2020-09-25 14:29:58,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:29:58,933 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:29:58,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:29:58,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:29:58,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:29:58,989 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:29:58,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:29:58,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:29:58,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:29:58,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:29:58,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:29:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 14:29:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:29:59,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:59,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:59,025 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:59,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 14:29:59,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:59,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496937193] [2020-09-25 14:29:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:59,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:59,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:29:59,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 14:29:59,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:59,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:29:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:29:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:59,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:59,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:59,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:59,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:59,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 14:29:59,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:59,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:59,401 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 14:29:59,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496937193] [2020-09-25 14:29:59,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:59,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:59,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814431861] [2020-09-25 14:29:59,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:59,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:59,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:59,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:59,430 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 14:29:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:59,559 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:29:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:29:59,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:29:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:59,579 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:29:59,580 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:29:59,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:29:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:29:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:29:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:29:59,662 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 14:29:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:59,663 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:29:59,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:29:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:29:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:29:59,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:59,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:59,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:29:59,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:59,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:59,669 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 14:29:59,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:59,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060986012] [2020-09-25 14:29:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:59,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:29:59,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 14:29:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:59,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:59,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:59,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:59,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:59,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:59,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:59,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:29:59,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:59,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:59,928 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 14:29:59,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060986012] [2020-09-25 14:29:59,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:59,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:59,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840628148] [2020-09-25 14:29:59,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:59,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:59,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:59,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:59,933 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 14:30:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:00,012 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 14:30:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:00,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:30:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:00,015 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:30:00,015 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:30:00,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:30:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 14:30:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:00,028 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 14:30:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:00,029 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:00,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:30:00,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:00,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:30:00,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:30:00,032 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 14:30:00,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:00,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36148450] [2020-09-25 14:30:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:30:00,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:00,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 14:30:00,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:00,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:30:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:30:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:00,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:00,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 14:30:01,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:01,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:01,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:30:01,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:01,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:30:01,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:01,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36148450] [2020-09-25 14:30:01,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:01,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:01,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592096427] [2020-09-25 14:30:01,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:01,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:01,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:01,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:01,106 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 14:30:01,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:01,233 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 14:30:01,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:01,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:30:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:01,236 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:01,236 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:30:01,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:30:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:30:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:30:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:30:01,249 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 14:30:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:01,249 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:30:01,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:30:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:30:01,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:01,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:30:01,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:30:01,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:01,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:01,253 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 14:30:01,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:01,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916048264] [2020-09-25 14:30:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:30:01,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 14:30:01,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:30:01,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:30:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:01,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:01,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:01,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:30:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:30:01,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:01,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:30:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:01,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:30:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:01,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:30:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:01,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:01,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916048264] [2020-09-25 14:30:01,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:01,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:01,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474281004] [2020-09-25 14:30:01,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:01,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:01,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:01,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:01,991 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 14:30:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:02,183 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-09-25 14:30:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:30:02,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:30:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:02,186 INFO L225 Difference]: With dead ends: 107 [2020-09-25 14:30:02,186 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 14:30:02,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:30:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 14:30:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 14:30:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:02,200 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 35 [2020-09-25 14:30:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:02,201 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:02,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:30:02,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:02,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 14:30:02,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:30:02,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:02,206 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 14:30:02,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:02,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335685857] [2020-09-25 14:30:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:02,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:30:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:30:07,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:07,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:30:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:07,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:07,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:07,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:10,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:30:10,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3318 [2020-09-25 14:30:10,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:10,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:10,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:10,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:10,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 14:30:10,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:10,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:10,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:10,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:10,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:10,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:10,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:10,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:10,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:10,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:10,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:10,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:10,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:10,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:10,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:30:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:10,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 14:30:10,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335685857] [2020-09-25 14:30:10,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:10,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:10,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256090271] [2020-09-25 14:30:10,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:10,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:10,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:10,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:10,777 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 7 states. [2020-09-25 14:30:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:10,901 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2020-09-25 14:30:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:10,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 14:30:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:10,904 INFO L225 Difference]: With dead ends: 74 [2020-09-25 14:30:10,904 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 14:30:10,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 14:30:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-09-25 14:30:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:10,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-25 14:30:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:10,915 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:10,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:30:10,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:10,918 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-09-25 14:30:10,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:30:10,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:10,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 14:30:10,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:10,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611309509] [2020-09-25 14:30:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:15,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:30:15,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:30:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:30:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:15,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:15,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:30:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:15,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:15,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:15,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:15,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:15,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:15,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:15,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:17,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:17,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:30:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:30:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:30:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:20,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:30:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:20,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:21,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:21,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 14:30:21,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:21,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:30:21,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:21,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:21,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:21,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:21,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:30:21,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:21,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:21,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:21,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:21,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:21,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:21,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:21,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:21,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:30:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:21,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:21,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:30:21,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:21,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:21,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:21,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:21,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:21,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:21,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:30:21,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611309509] [2020-09-25 14:30:21,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:21,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:30:21,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667757033] [2020-09-25 14:30:21,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:30:21,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:21,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:30:21,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:30:21,269 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 10 states. [2020-09-25 14:30:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:21,540 INFO L93 Difference]: Finished difference Result 125 states and 163 transitions. [2020-09-25 14:30:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:30:21,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 14:30:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:21,542 INFO L225 Difference]: With dead ends: 125 [2020-09-25 14:30:21,542 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 14:30:21,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:30:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 14:30:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-09-25 14:30:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 14:30:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-09-25 14:30:21,555 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 67 [2020-09-25 14:30:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:21,555 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-09-25 14:30:21,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:30:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-09-25 14:30:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:30:21,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:21,558 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 14:30:21,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:30:21,559 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 14:30:21,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:21,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131559650] [2020-09-25 14:30:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:30:26,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:30:26,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:26,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:26,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:26,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:26,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:26,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:26,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:26,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:30:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:30:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 14:30:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:30:31,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:30:31,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:31,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:31,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:30:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:30:31,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 14:30:31,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:30:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:30:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:31,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:31,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:30:31,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:31,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:31,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:30:31,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:31,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:31,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 14:30:31,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131559650] [2020-09-25 14:30:31,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:31,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:30:31,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897110946] [2020-09-25 14:30:31,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:30:31,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:31,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:30:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:30:31,988 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 8 states. [2020-09-25 14:30:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:32,219 INFO L93 Difference]: Finished difference Result 166 states and 230 transitions. [2020-09-25 14:30:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:30:32,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 14:30:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:32,224 INFO L225 Difference]: With dead ends: 166 [2020-09-25 14:30:32,224 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 14:30:32,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:30:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 14:30:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-09-25 14:30:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 14:30:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 127 transitions. [2020-09-25 14:30:32,241 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 127 transitions. Word has length 69 [2020-09-25 14:30:32,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:32,242 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 127 transitions. [2020-09-25 14:30:32,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:30:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 127 transitions. [2020-09-25 14:30:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 14:30:32,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:32,244 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:32,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:30:32,244 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 14:30:32,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:32,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872587909] [2020-09-25 14:30:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:34,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:30:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:37,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:37,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:37,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:37,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:37,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 14:30:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:30:42,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:42,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:30:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:30:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 14:30:43,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:43,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:43,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:30:43,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:30:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:43,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:43,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:43,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:43,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:30:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 14:30:43,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872587909] [2020-09-25 14:30:43,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:43,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:30:43,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047843816] [2020-09-25 14:30:43,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:30:43,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:43,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:30:43,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:30:43,632 INFO L87 Difference]: Start difference. First operand 94 states and 127 transitions. Second operand 11 states. [2020-09-25 14:30:44,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:44,138 INFO L93 Difference]: Finished difference Result 221 states and 373 transitions. [2020-09-25 14:30:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:30:44,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 14:30:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:44,143 INFO L225 Difference]: With dead ends: 221 [2020-09-25 14:30:44,144 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 14:30:44,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:30:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 14:30:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2020-09-25 14:30:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 14:30:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 128 transitions. [2020-09-25 14:30:44,160 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 128 transitions. Word has length 84 [2020-09-25 14:30:44,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:44,160 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 128 transitions. [2020-09-25 14:30:44,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:30:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 128 transitions. [2020-09-25 14:30:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 14:30:44,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:44,163 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:30:44,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:30:44,163 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 14:30:44,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:44,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545167770] [2020-09-25 14:30:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:30:49,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:30:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:49,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:49,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:49,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:49,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:49,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:49,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:49,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking...