/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:13,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:13,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:13,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:13,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:13,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:13,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:13,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:13,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:13,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:13,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:13,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:13,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:13,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:13,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:13,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:13,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:13,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:13,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:13,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:13,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:13,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:13,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:13,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:13,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:13,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:13,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:13,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:13,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:13,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:13,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:13,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:13,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:13,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:13,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:13,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:13,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:13,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:13,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:13,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:13,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:13,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:41:13,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:13,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:13,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:13,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:13,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:13,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:13,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:13,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:13,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:13,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:13,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:13,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:13,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:13,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:13,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:13,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:13,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:13,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:13,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:13,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:13,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:13,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:13,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:13,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:13,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:13,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:13,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:13,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:13,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:13,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:41:14,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:14,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:14,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:14,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:14,214 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:14,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 14:41:14,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc6c752d/79bc0c0304394d3b90aa0f23c8546d9a/FLAG877afbc91 [2020-09-25 14:41:15,030 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:15,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 14:41:15,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc6c752d/79bc0c0304394d3b90aa0f23c8546d9a/FLAG877afbc91 [2020-09-25 14:41:15,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc6c752d/79bc0c0304394d3b90aa0f23c8546d9a [2020-09-25 14:41:15,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:15,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:15,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:15,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:15,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:15,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:15" (1/1) ... [2020-09-25 14:41:15,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1576aa10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:15, skipping insertion in model container [2020-09-25 14:41:15,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:15" (1/1) ... [2020-09-25 14:41:15,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:15,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:15,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:15,985 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:16,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:16,170 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:16,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16 WrapperNode [2020-09-25 14:41:16,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:16,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:16,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:16,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:16,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... [2020-09-25 14:41:16,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:16,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:16,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:16,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:16,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:18,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:18,276 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:18,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:18 BoogieIcfgContainer [2020-09-25 14:41:18,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:18,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:18,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:18,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:18,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:15" (1/3) ... [2020-09-25 14:41:18,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169b74ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:18, skipping insertion in model container [2020-09-25 14:41:18,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:16" (2/3) ... [2020-09-25 14:41:18,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169b74ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:18, skipping insertion in model container [2020-09-25 14:41:18,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:18" (3/3) ... [2020-09-25 14:41:18,296 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 14:41:18,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:18,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:18,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:18,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:18,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:18,382 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:18,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:18,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:18,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:18,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:18,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 14:41:18,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:18,431 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] [2020-09-25 14:41:18,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:18,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 14:41:18,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:18,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463871248] [2020-09-25 14:41:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:19,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:41:19,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-09-25 14:41:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:19,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 14:41:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:19,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:19,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:19,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:41:19,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:19,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:19,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463871248] [2020-09-25 14:41:19,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:19,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:19,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496302290] [2020-09-25 14:41:19,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:19,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:19,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:19,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:19,874 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:21,890 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:41:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:21,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 14:41:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:21,916 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:41:21,916 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:41:21,930 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 14:41:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:41:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:41:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:41:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:41:22,030 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 14:41:22,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:22,030 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:41:22,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:41:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 14:41:22,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:22,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:22,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:22,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:22,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 14:41:22,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:22,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245683229] [2020-09-25 14:41:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:24,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 14:41:24,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:24,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2760 [2020-09-25 14:41:24,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:24,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:25,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:25,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:41:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:25,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:25,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:25,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:25,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:41:25,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 14:41:25,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:25,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:41:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:25,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245683229] [2020-09-25 14:41:25,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:25,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:25,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140596028] [2020-09-25 14:41:25,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:25,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:25,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:25,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:25,316 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:41:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:27,755 INFO L93 Difference]: Finished difference Result 1477 states and 1881 transitions. [2020-09-25 14:41:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:41:27,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-25 14:41:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:27,766 INFO L225 Difference]: With dead ends: 1477 [2020-09-25 14:41:27,766 INFO L226 Difference]: Without dead ends: 949 [2020-09-25 14:41:27,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:41:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-09-25 14:41:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 888. [2020-09-25 14:41:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 14:41:27,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1123 transitions. [2020-09-25 14:41:27,837 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1123 transitions. Word has length 165 [2020-09-25 14:41:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:27,838 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1123 transitions. [2020-09-25 14:41:27,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1123 transitions. [2020-09-25 14:41:27,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 14:41:27,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:27,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:27,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:27,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:27,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:27,844 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 14:41:27,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:27,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641361446] [2020-09-25 14:41:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 14:41:32,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:41:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-09-25 14:41:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:33,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:33,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:33,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:33,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:33,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:33,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:33,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:33,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:33,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:33,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:33,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:33,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 14:41:33,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:33,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:33,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:33,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641361446] [2020-09-25 14:41:33,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:33,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:33,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645434605] [2020-09-25 14:41:33,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:33,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:33,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:33,300 INFO L87 Difference]: Start difference. First operand 888 states and 1123 transitions. Second operand 8 states. [2020-09-25 14:41:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:36,459 INFO L93 Difference]: Finished difference Result 2329 states and 3033 transitions. [2020-09-25 14:41:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:36,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-09-25 14:41:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:36,470 INFO L225 Difference]: With dead ends: 2329 [2020-09-25 14:41:36,470 INFO L226 Difference]: Without dead ends: 1456 [2020-09-25 14:41:36,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-09-25 14:41:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1387. [2020-09-25 14:41:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2020-09-25 14:41:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1732 transitions. [2020-09-25 14:41:36,524 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1732 transitions. Word has length 174 [2020-09-25 14:41:36,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:36,525 INFO L479 AbstractCegarLoop]: Abstraction has 1387 states and 1732 transitions. [2020-09-25 14:41:36,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1732 transitions. [2020-09-25 14:41:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 14:41:36,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:36,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:36,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:36,531 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:36,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:36,531 INFO L82 PathProgramCache]: Analyzing trace with hash 969467690, now seen corresponding path program 1 times [2020-09-25 14:41:36,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:36,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514523893] [2020-09-25 14:41:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:39,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 14:41:39,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-09-25 14:41:39,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:39,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:41:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:39,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:39,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:39,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:39,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:39,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:40,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:41:40,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:40,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 14:41:40,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:40,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:40,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514523893] [2020-09-25 14:41:40,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:40,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:40,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510711942] [2020-09-25 14:41:40,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:40,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:40,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:40,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:40,173 INFO L87 Difference]: Start difference. First operand 1387 states and 1732 transitions. Second operand 7 states. [2020-09-25 14:41:42,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:42,506 INFO L93 Difference]: Finished difference Result 3264 states and 4249 transitions. [2020-09-25 14:41:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:42,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 14:41:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:42,526 INFO L225 Difference]: With dead ends: 3264 [2020-09-25 14:41:42,526 INFO L226 Difference]: Without dead ends: 2051 [2020-09-25 14:41:42,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:42,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2020-09-25 14:41:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 2009. [2020-09-25 14:41:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-09-25 14:41:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2453 transitions. [2020-09-25 14:41:42,606 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2453 transitions. Word has length 176 [2020-09-25 14:41:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:42,607 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 2453 transitions. [2020-09-25 14:41:42,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2453 transitions. [2020-09-25 14:41:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 14:41:42,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:42,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:42,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:42,615 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1609125249, now seen corresponding path program 1 times [2020-09-25 14:41:42,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:42,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665615514] [2020-09-25 14:41:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:47,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 14:41:47,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:41:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:47,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:41:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:47,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:41:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:47,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:41:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:48,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:48,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:48,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:48,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665615514] [2020-09-25 14:41:48,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:48,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:41:48,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345323570] [2020-09-25 14:41:48,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:41:48,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:41:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:41:48,424 INFO L87 Difference]: Start difference. First operand 2009 states and 2453 transitions. Second operand 10 states. [2020-09-25 14:41:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:53,069 INFO L93 Difference]: Finished difference Result 4785 states and 6229 transitions. [2020-09-25 14:41:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:41:53,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-09-25 14:41:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:53,090 INFO L225 Difference]: With dead ends: 4785 [2020-09-25 14:41:53,090 INFO L226 Difference]: Without dead ends: 3428 [2020-09-25 14:41:53,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:41:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2020-09-25 14:41:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3164. [2020-09-25 14:41:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-09-25 14:41:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 3935 transitions. [2020-09-25 14:41:53,198 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 3935 transitions. Word has length 253 [2020-09-25 14:41:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:53,199 INFO L479 AbstractCegarLoop]: Abstraction has 3164 states and 3935 transitions. [2020-09-25 14:41:53,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:41:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 3935 transitions. [2020-09-25 14:41:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 14:41:53,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:53,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:41:53,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:53,206 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash -422841132, now seen corresponding path program 1 times [2020-09-25 14:41:53,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:53,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007589689] [2020-09-25 14:41:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 14:41:58,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:41:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 14:41:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:58,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:41:58,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:41:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:58,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:58,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:41:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:58,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:58,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:58,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:58,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 14:41:58,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:58,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:41:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:41:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:41:59,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-25 14:41:59,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:41:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 146 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:41:59,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007589689] [2020-09-25 14:41:59,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:59,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:41:59,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10158511] [2020-09-25 14:41:59,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:41:59,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:59,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:41:59,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:59,524 INFO L87 Difference]: Start difference. First operand 3164 states and 3935 transitions. Second operand 9 states.