/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:47,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:47,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:47,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:47,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:47,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:47,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:47,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:47,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:47,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:47,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:47,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:47,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:47,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:47,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:47,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:47,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:47,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:47,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:47,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:47,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:47,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:47,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:47,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:47,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:47,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:47,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:47,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:47,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:47,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:47,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:47,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:47,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:47,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:47,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:47,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:47,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:47,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:47,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:47,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:47,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:47,433 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 11:16:47,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:47,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:47,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:47,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:47,483 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:47,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:47,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:47,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:47,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:47,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:47,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:47,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:47,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:47,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:47,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:47,486 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:47,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:47,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:47,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:47,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:47,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:47,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:47,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:47,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:47,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:47,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:47,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:47,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:47,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:47,489 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:16:47,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:48,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:48,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:48,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:48,017 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:48,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-25 11:16:48,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ce69532/c581b2a85c3647e2b39932bedeff6b26/FLAG4dd72c0e2 [2020-09-25 11:16:48,726 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:48,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label33.c [2020-09-25 11:16:48,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ce69532/c581b2a85c3647e2b39932bedeff6b26/FLAG4dd72c0e2 [2020-09-25 11:16:48,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ce69532/c581b2a85c3647e2b39932bedeff6b26 [2020-09-25 11:16:48,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:48,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:48,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:48,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:48,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:48,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:48" (1/1) ... [2020-09-25 11:16:48,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:48, skipping insertion in model container [2020-09-25 11:16:48,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:48" (1/1) ... [2020-09-25 11:16:48,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:49,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:49,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:49,541 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:49,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:49,845 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:49,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49 WrapperNode [2020-09-25 11:16:49,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:49,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:49,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:49,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:49,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (1/1) ... [2020-09-25 11:16:49,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:49,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:49,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:49,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:49,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (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 11:16:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:51,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:51,440 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:51,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:51 BoogieIcfgContainer [2020-09-25 11:16:51,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:51,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:51,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:51,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:51,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:48" (1/3) ... [2020-09-25 11:16:51,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:51, skipping insertion in model container [2020-09-25 11:16:51,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:49" (2/3) ... [2020-09-25 11:16:51,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:51, skipping insertion in model container [2020-09-25 11:16:51,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:51" (3/3) ... [2020-09-25 11:16:51,460 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label33.c [2020-09-25 11:16:51,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:51,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:51,511 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:51,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:51,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:51,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:51,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:51,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:51,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:51,550 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:51,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 11:16:51,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:51,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:51,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:51,616 INFO L82 PathProgramCache]: Analyzing trace with hash 341026450, now seen corresponding path program 1 times [2020-09-25 11:16:51,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:51,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 11:16:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:57,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:57,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:16:57,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:16:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:16:57,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:57,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:57,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:16:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 11:16:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:16:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:16:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:16:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:57,399 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 11:16:57,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 11:16:57,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:57,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:57,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244625820] [2020-09-25 11:16:57,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:57,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:57,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:57,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:57,431 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:16:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:59,474 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:16:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:59,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-09-25 11:16:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:59,502 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:16:59,502 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:16:59,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:59,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:16:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:16:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:16:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:16:59,614 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 167 [2020-09-25 11:16:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:59,615 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:16:59,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:16:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:16:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 11:16:59,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:59,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:59,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:59,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:59,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:59,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1817628535, now seen corresponding path program 1 times [2020-09-25 11:16:59,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:59,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527868470] [2020-09-25 11:16:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:04,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 11:17:04,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:17:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:17:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:04,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:04,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:17:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:17:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:04,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:04,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:17:04,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:04,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 11:17:05,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:05,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:05,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:17:05,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 11:17:05,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:05,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:05,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:17:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:05,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527868470] [2020-09-25 11:17:05,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:05,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:17:05,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543127970] [2020-09-25 11:17:05,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:17:05,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:17:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:17:05,572 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 11:17:06,430 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-25 11:17:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:09,138 INFO L93 Difference]: Finished difference Result 1925 states and 2547 transitions. [2020-09-25 11:17:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:17:09,139 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 201 [2020-09-25 11:17:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:09,158 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 11:17:09,158 INFO L226 Difference]: Without dead ends: 729 [2020-09-25 11:17:09,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:17:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2020-09-25 11:17:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 716. [2020-09-25 11:17:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-09-25 11:17:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 838 transitions. [2020-09-25 11:17:09,233 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 838 transitions. Word has length 201 [2020-09-25 11:17:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:09,234 INFO L479 AbstractCegarLoop]: Abstraction has 716 states and 838 transitions. [2020-09-25 11:17:09,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:17:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 838 transitions. [2020-09-25 11:17:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 11:17:09,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:09,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:09,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:09,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:09,244 INFO L82 PathProgramCache]: Analyzing trace with hash 527414775, now seen corresponding path program 1 times [2020-09-25 11:17:09,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:09,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770605309] [2020-09-25 11:17:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:14,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 11:17:14,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:17:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:17:14,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:14,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:17:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:17:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:15,011 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-09-25 11:17:15,275 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-09-25 11:17:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:15,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:15,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:15,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:17:15,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:15,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:15,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:15,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:17:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 11:17:15,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:15,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:17:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:16,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770605309] [2020-09-25 11:17:16,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:16,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:17:16,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648495374] [2020-09-25 11:17:16,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:17:16,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:16,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:17:16,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:17:16,066 INFO L87 Difference]: Start difference. First operand 716 states and 838 transitions. Second operand 16 states. [2020-09-25 11:17:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:19,299 INFO L93 Difference]: Finished difference Result 1352 states and 1607 transitions. [2020-09-25 11:17:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:17:19,300 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 202 [2020-09-25 11:17:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:19,304 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 11:17:19,305 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 11:17:19,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:17:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 11:17:19,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 11:17:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 11:17:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 11:17:19,338 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 202 [2020-09-25 11:17:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:19,340 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 11:17:19,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:17:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 11:17:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 11:17:19,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:19,345 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:19,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:19,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:19,346 INFO L82 PathProgramCache]: Analyzing trace with hash -42939684, now seen corresponding path program 1 times [2020-09-25 11:17:19,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:19,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035899555] [2020-09-25 11:17:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:21,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:24,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 11:17:24,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:24,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:17:24,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:24,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 11:17:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 11:17:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:24,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:24,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:24,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:24,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:17:24,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:24,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:24,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:24,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:25,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:17:25,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:17:25,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:25,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:17:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 11:17:25,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035899555] [2020-09-25 11:17:25,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:25,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:17:25,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894727294] [2020-09-25 11:17:25,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:17:25,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:17:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:17:25,457 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 11:17:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:28,224 INFO L93 Difference]: Finished difference Result 1564 states and 1718 transitions. [2020-09-25 11:17:28,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:17:28,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 245 [2020-09-25 11:17:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:28,230 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 11:17:28,230 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 11:17:28,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:17:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 11:17:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 11:17:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 11:17:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 11:17:28,256 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 245 [2020-09-25 11:17:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:28,258 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 11:17:28,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:17:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 11:17:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 11:17:28,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:28,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:28,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:28,263 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:28,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1703944871, now seen corresponding path program 1 times [2020-09-25 11:17:28,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:28,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104147953] [2020-09-25 11:17:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:33,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 11:17:33,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:33,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:33,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:33,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:17:33,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:33,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:33,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:33,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:17:33,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 11:17:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:33,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:17:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:34,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104147953] [2020-09-25 11:17:34,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:34,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:17:34,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687095380] [2020-09-25 11:17:34,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:17:34,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:17:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:17:34,224 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 11 states. [2020-09-25 11:17:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:37,527 INFO L93 Difference]: Finished difference Result 1972 states and 2209 transitions. [2020-09-25 11:17:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:17:37,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-09-25 11:17:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:37,528 INFO L225 Difference]: With dead ends: 1972 [2020-09-25 11:17:37,529 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:17:37,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:17:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:17:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:17:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:17:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:17:37,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 251 [2020-09-25 11:17:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:37,536 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:17:37,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:17:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:17:37,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:17:37,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:17:37,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.