/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:10,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:10,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:10,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:10,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:10,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:10,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:10,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:10,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:10,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:10,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:10,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:10,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:10,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:10,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:10,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:10,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:10,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:10,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:10,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:10,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:10,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:10,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:10,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:10,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:10,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:10,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:10,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:10,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:10,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:10,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:10,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:10,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:10,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:10,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:10,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:10,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:10,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:10,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:10,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:10,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:10,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:10:10,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:10,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:10,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:10,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:10,421 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:10,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:10,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:10,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:10,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:10,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:10,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:10,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:10,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:10,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:10,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:10,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:10,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:10,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:10,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:10,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:10,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:10,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:10,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:10,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:10,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:10,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:10,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:10,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:10,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:10,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:10,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:10,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:10,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:10,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:10,906 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:10,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 10:10:10,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aec17dc0/7a377b6e4fba43d3b55d7d2e45dace53/FLAG526d1f83a [2020-09-25 10:10:11,649 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:11,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-25 10:10:11,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aec17dc0/7a377b6e4fba43d3b55d7d2e45dace53/FLAG526d1f83a [2020-09-25 10:10:11,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4aec17dc0/7a377b6e4fba43d3b55d7d2e45dace53 [2020-09-25 10:10:11,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:11,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:11,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:11,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:11,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:11,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:11" (1/1) ... [2020-09-25 10:10:11,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:11, skipping insertion in model container [2020-09-25 10:10:11,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:11" (1/1) ... [2020-09-25 10:10:11,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:12,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:12,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:12,525 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:12,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:12,746 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:12,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12 WrapperNode [2020-09-25 10:10:12,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:12,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:12,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:12,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:12,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... [2020-09-25 10:10:12,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:12,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:12,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:12,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:12,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:12,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:14,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:14,304 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:14,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:14 BoogieIcfgContainer [2020-09-25 10:10:14,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:14,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:14,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:14,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:14,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:11" (1/3) ... [2020-09-25 10:10:14,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:14, skipping insertion in model container [2020-09-25 10:10:14,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:12" (2/3) ... [2020-09-25 10:10:14,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:14, skipping insertion in model container [2020-09-25 10:10:14,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:14" (3/3) ... [2020-09-25 10:10:14,325 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-25 10:10:14,337 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:14,356 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:14,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:14,423 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:14,424 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:14,425 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:14,425 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:14,425 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:14,425 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:14,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:14,425 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 10:10:14,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:14,493 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] [2020-09-25 10:10:14,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:14,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-25 10:10:14,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:14,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 10:10:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:15,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:19,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 10:10:19,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:10:19,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:19,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 10:10:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:10:20,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:20,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:10:20,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:20,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:20,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:20,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:20,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 10:10:20,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:20,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:10:20,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234132154] [2020-09-25 10:10:20,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:20,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:20,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:20,239 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 10:10:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:23,100 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:10:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:23,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 10:10:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:23,134 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:10:23,135 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:10:23,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:10:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:10:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:10:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:10:23,251 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 138 [2020-09-25 10:10:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:23,252 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:10:23,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:10:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:10:23,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:23,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:23,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:23,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:23,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1674375397, now seen corresponding path program 1 times [2020-09-25 10:10:23,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:23,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426887808] [2020-09-25 10:10:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:28,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:10:28,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:10:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:28,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:10:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:10:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:28,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:28,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:28,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:10:28,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:28,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:28,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:28,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:28,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:10:28,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:28,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:28,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:10:28,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:28,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426887808] [2020-09-25 10:10:28,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:28,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:28,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555173824] [2020-09-25 10:10:28,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:28,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:28,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:28,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:28,668 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 10:10:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:31,328 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 10:10:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:31,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 10:10:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:31,346 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 10:10:31,346 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 10:10:31,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 10:10:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 10:10:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 10:10:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 10:10:31,427 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 156 [2020-09-25 10:10:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:31,429 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 10:10:31,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:31,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 10:10:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:10:31,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:31,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:10:31,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:31,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash -873577392, now seen corresponding path program 1 times [2020-09-25 10:10:31,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:31,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205402645] [2020-09-25 10:10:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:10:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:10:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 10:10:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 10:10:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:36,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:10:36,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:10:36,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:10:36,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:10:36,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:36,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205402645] [2020-09-25 10:10:36,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:36,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:36,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593512301] [2020-09-25 10:10:36,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:36,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:36,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:36,733 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 10:10:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:38,539 INFO L93 Difference]: Finished difference Result 2752 states and 3557 transitions. [2020-09-25 10:10:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:38,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 10:10:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:38,557 INFO L225 Difference]: With dead ends: 2752 [2020-09-25 10:10:38,558 INFO L226 Difference]: Without dead ends: 1719 [2020-09-25 10:10:38,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-09-25 10:10:38,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1665. [2020-09-25 10:10:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-09-25 10:10:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 1991 transitions. [2020-09-25 10:10:38,630 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 1991 transitions. Word has length 162 [2020-09-25 10:10:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:38,631 INFO L479 AbstractCegarLoop]: Abstraction has 1665 states and 1991 transitions. [2020-09-25 10:10:38,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 1991 transitions. [2020-09-25 10:10:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 10:10:38,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:38,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:10:38,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:38,648 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:38,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:38,648 INFO L82 PathProgramCache]: Analyzing trace with hash -140712661, now seen corresponding path program 1 times [2020-09-25 10:10:38,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:38,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817984512] [2020-09-25 10:10:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:43,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:43,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 10:10:43,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:43,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:10:43,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:43,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:10:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 10:10:43,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:10:43,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:44,310 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-09-25 10:10:44,499 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-09-25 10:10:44,695 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2020-09-25 10:10:44,943 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2020-09-25 10:10:45,166 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 38 [2020-09-25 10:10:45,377 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2020-09-25 10:10:45,573 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 29 [2020-09-25 10:10:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:45,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:45,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:10:45,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:45,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:45,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:45,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:45,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:10:45,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:10:45,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:45,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:45,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 10:10:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:45,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:45,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:45,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:10:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:10:45,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817984512] [2020-09-25 10:10:45,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:45,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:10:45,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946531907] [2020-09-25 10:10:45,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:10:45,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:45,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:10:45,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:10:45,921 INFO L87 Difference]: Start difference. First operand 1665 states and 1991 transitions. Second operand 13 states. [2020-09-25 10:10:46,565 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-09-25 10:10:46,924 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-09-25 10:10:47,342 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 10:10:48,725 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-09-25 10:10:48,946 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-09-25 10:10:49,226 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-25 10:10:49,565 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-09-25 10:10:49,816 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-09-25 10:10:50,114 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-09-25 10:10:50,701 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-09-25 10:10:50,898 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-09-25 10:10:51,579 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-09-25 10:10:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:53,588 INFO L93 Difference]: Finished difference Result 4611 states and 5855 transitions. [2020-09-25 10:10:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 10:10:53,589 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 179 [2020-09-25 10:10:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:53,601 INFO L225 Difference]: With dead ends: 4611 [2020-09-25 10:10:53,602 INFO L226 Difference]: Without dead ends: 2208 [2020-09-25 10:10:53,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:10:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2020-09-25 10:10:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2198. [2020-09-25 10:10:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2020-09-25 10:10:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 2576 transitions. [2020-09-25 10:10:53,688 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 2576 transitions. Word has length 179 [2020-09-25 10:10:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:53,688 INFO L479 AbstractCegarLoop]: Abstraction has 2198 states and 2576 transitions. [2020-09-25 10:10:53,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:10:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 2576 transitions. [2020-09-25 10:10:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 10:10:53,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:53,697 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:10:53,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:53,698 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1730346339, now seen corresponding path program 1 times [2020-09-25 10:10:53,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:53,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201921843] [2020-09-25 10:10:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:10:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:10:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:10:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:10:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 10:10:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 10:10:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:59,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:59,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:59,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:10:59,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:59,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:59,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:59,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:59,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:59,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:59,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 10:10:59,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:10:59,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:59,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 10:10:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 10:10:59,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201921843] [2020-09-25 10:10:59,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:59,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:10:59,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602168610] [2020-09-25 10:10:59,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:10:59,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:59,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:10:59,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:10:59,544 INFO L87 Difference]: Start difference. First operand 2198 states and 2576 transitions. Second operand 14 states.