/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=0.3 --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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:28:17,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:28:17,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:28:17,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:28:17,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:28:17,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:28:17,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:28:17,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:28:17,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:28:17,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:28:17,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:28:17,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:28:17,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:28:17,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:28:17,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:28:17,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:28:17,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:28:17,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:28:17,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:28:17,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:28:17,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:28:17,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:28:17,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:28:17,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:28:17,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:28:17,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:28:17,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:28:17,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:28:17,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:28:17,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:28:17,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:28:17,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:28:17,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:28:17,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:28:17,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:28:17,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:28:17,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:28:17,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:28:17,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:28:17,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:28:17,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:28:17,465 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 12:28:17,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:28:17,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:28:17,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:28:17,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:28:17,529 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:28:17,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:28:17,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:28:17,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:28:17,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:28:17,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:28:17,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:28:17,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:28:17,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:28:17,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:28:17,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:28:17,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:28:17,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:28:17,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:28:17,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:28:17,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:28:17,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:28:17,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:28:17,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:28:17,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:28:17,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:28:17,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:28:17,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:28:17,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:28:17,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:28:17,535 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:28:18,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:28:18,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:28:18,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:28:18,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:28:18,036 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:28:18,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 12:28:18,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3540fefa4/48bd4cb9f79647129af4db00d4f7d6f5/FLAG90a934549 [2020-09-25 12:28:18,715 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:28:18,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 12:28:18,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3540fefa4/48bd4cb9f79647129af4db00d4f7d6f5/FLAG90a934549 [2020-09-25 12:28:18,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3540fefa4/48bd4cb9f79647129af4db00d4f7d6f5 [2020-09-25 12:28:18,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:28:18,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:28:18,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:18,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:28:18,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:28:18,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:18" (1/1) ... [2020-09-25 12:28:18,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:18, skipping insertion in model container [2020-09-25 12:28:18,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:18" (1/1) ... [2020-09-25 12:28:18,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:28:19,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:28:19,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:19,648 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:28:20,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:20,050 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:28:20,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20 WrapperNode [2020-09-25 12:28:20,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:20,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:28:20,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:28:20,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:28:20,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (1/1) ... [2020-09-25 12:28:20,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:28:20,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:28:20,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:28:20,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:28:20,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (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 12:28:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:28:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:28:20,364 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:28:20,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:28:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:28:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:28:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:28:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:22,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:22,127 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:22,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:22 BoogieIcfgContainer [2020-09-25 12:28:22,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:22,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:22,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:22,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:22,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:28:18" (1/3) ... [2020-09-25 12:28:22,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b2832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:22, skipping insertion in model container [2020-09-25 12:28:22,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:20" (2/3) ... [2020-09-25 12:28:22,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b2832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:22, skipping insertion in model container [2020-09-25 12:28:22,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:22" (3/3) ... [2020-09-25 12:28:22,148 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 12:28:22,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:22,170 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:22,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:22,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:22,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:22,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:22,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:22,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:22,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:22,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:22,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 12:28:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:28:22,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:22,278 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] [2020-09-25 12:28:22,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:22,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:22,287 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 12:28:22,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:22,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127539131] [2020-09-25 12:28:22,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:23,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:28:23,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:23,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-09-25 12:28:23,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:23,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 12:28:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:28:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:23,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:28:23,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:23,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:23,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:23,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:23,416 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 12:28:23,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127539131] [2020-09-25 12:28:23,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:23,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:28:23,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178649306] [2020-09-25 12:28:23,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:28:23,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:28:23,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:28:23,462 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 12:28:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:26,250 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 12:28:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:28:26,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 12:28:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:26,281 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 12:28:26,282 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 12:28:26,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 12:28:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 12:28:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 12:28:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 12:28:26,415 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 67 [2020-09-25 12:28:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:26,416 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 12:28:26,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:28:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 12:28:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 12:28:26,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:26,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:26,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:26,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:26,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1248724664, now seen corresponding path program 1 times [2020-09-25 12:28:26,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:26,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159853411] [2020-09-25 12:28:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:31,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 12:28:31,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:28:31,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:31,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 12:28:31,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:31,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:31,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:31,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:31,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:28:31,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:31,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:31,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:31,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 12:28:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:31,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:28:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:32,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159853411] [2020-09-25 12:28:32,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:32,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:32,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087869766] [2020-09-25 12:28:32,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:32,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:32,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:32,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:32,005 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 8 states. [2020-09-25 12:28:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:37,331 INFO L93 Difference]: Finished difference Result 2929 states and 3856 transitions. [2020-09-25 12:28:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:28:37,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 12:28:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:37,346 INFO L225 Difference]: With dead ends: 2929 [2020-09-25 12:28:37,347 INFO L226 Difference]: Without dead ends: 2138 [2020-09-25 12:28:37,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2020-09-25 12:28:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2079. [2020-09-25 12:28:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-09-25 12:28:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2622 transitions. [2020-09-25 12:28:37,449 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2622 transitions. Word has length 146 [2020-09-25 12:28:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:37,450 INFO L479 AbstractCegarLoop]: Abstraction has 2079 states and 2622 transitions. [2020-09-25 12:28:37,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2622 transitions. [2020-09-25 12:28:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 12:28:37,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:37,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:37,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:37,456 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:37,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 12:28:37,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:37,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571412254] [2020-09-25 12:28:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 12:28:41,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4228 [2020-09-25 12:28:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 12:28:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:28:42,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 12:28:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:42,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:28:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:42,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571412254] [2020-09-25 12:28:42,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:42,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:42,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381563280] [2020-09-25 12:28:42,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:42,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:42,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:42,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:42,091 INFO L87 Difference]: Start difference. First operand 2079 states and 2622 transitions. Second operand 8 states. [2020-09-25 12:28:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:45,725 INFO L93 Difference]: Finished difference Result 5087 states and 6603 transitions. [2020-09-25 12:28:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:45,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 12:28:45,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:45,744 INFO L225 Difference]: With dead ends: 5087 [2020-09-25 12:28:45,744 INFO L226 Difference]: Without dead ends: 3023 [2020-09-25 12:28:45,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-09-25 12:28:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2133. [2020-09-25 12:28:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-09-25 12:28:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 2561 transitions. [2020-09-25 12:28:45,848 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 2561 transitions. Word has length 149 [2020-09-25 12:28:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:45,850 INFO L479 AbstractCegarLoop]: Abstraction has 2133 states and 2561 transitions. [2020-09-25 12:28:45,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 2561 transitions. [2020-09-25 12:28:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 12:28:45,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:45,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-09-25 12:28:45,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:45,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1077856175, now seen corresponding path program 1 times [2020-09-25 12:28:45,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:45,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563491854] [2020-09-25 12:28:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:50,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:50,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 12:28:50,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 12:28:50,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:50,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:28:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 12:28:50,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:51,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 12:28:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:51,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:28:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 12:28:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:28:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 12:28:51,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:51,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 12:28:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:51,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563491854] [2020-09-25 12:28:51,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:51,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:51,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494435742] [2020-09-25 12:28:51,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:51,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:51,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:51,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:51,716 INFO L87 Difference]: Start difference. First operand 2133 states and 2561 transitions. Second operand 8 states. [2020-09-25 12:28:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:56,721 INFO L93 Difference]: Finished difference Result 5198 states and 6412 transitions. [2020-09-25 12:28:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:28:56,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-09-25 12:28:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:56,737 INFO L225 Difference]: With dead ends: 5198 [2020-09-25 12:28:56,738 INFO L226 Difference]: Without dead ends: 3080 [2020-09-25 12:28:56,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:28:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2020-09-25 12:28:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 2817. [2020-09-25 12:28:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2817 states. [2020-09-25 12:28:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 3332 transitions. [2020-09-25 12:28:56,824 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 3332 transitions. Word has length 244 [2020-09-25 12:28:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:56,825 INFO L479 AbstractCegarLoop]: Abstraction has 2817 states and 3332 transitions. [2020-09-25 12:28:56,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 3332 transitions. [2020-09-25 12:28:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 12:28:56,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:56,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-09-25 12:28:56,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:56,832 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:56,832 INFO L82 PathProgramCache]: Analyzing trace with hash -740360978, now seen corresponding path program 1 times [2020-09-25 12:28:56,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:56,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836141087] [2020-09-25 12:28:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:01,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 12:29:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:29:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:29:01,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:01,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:29:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 12:29:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 12:29:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 12:29:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:29:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:02,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:02,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:29:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:29:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:02,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:29:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:29:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:29:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:29:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:02,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:02,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:29:02,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:29:02,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:02,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:02,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:29:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:29:02,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:29:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 12:29:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:02,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:02,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:29:02,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:02,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-25 12:29:02,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:02,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:02,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:29:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:29:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 12:29:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:29:02,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836141087] [2020-09-25 12:29:02,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:29:02,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:29:02,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195863556] [2020-09-25 12:29:02,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:29:02,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:29:02,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:29:02,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:29:02,908 INFO L87 Difference]: Start difference. First operand 2817 states and 3332 transitions. Second operand 7 states. [2020-09-25 12:29:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:29:06,635 INFO L93 Difference]: Finished difference Result 6364 states and 7753 transitions. [2020-09-25 12:29:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:29:06,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-09-25 12:29:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:29:06,653 INFO L225 Difference]: With dead ends: 6364 [2020-09-25 12:29:06,653 INFO L226 Difference]: Without dead ends: 2381 [2020-09-25 12:29:06,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:29:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-09-25 12:29:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1937. [2020-09-25 12:29:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-09-25 12:29:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2131 transitions. [2020-09-25 12:29:06,749 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2131 transitions. Word has length 299 [2020-09-25 12:29:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:29:06,750 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 2131 transitions. [2020-09-25 12:29:06,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:29:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2131 transitions. [2020-09-25 12:29:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-25 12:29:06,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:29:06,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:29:06,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:29:06,760 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:29:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:29:06,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1472936979, now seen corresponding path program 1 times [2020-09-25 12:29:06,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:29:06,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158106590] [2020-09-25 12:29:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:29:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking...