/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=0.4 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:09,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:09,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:09,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:09,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:09,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:09,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:09,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:09,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:09,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:09,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:09,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:09,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:09,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:09,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:09,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:09,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:09,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:09,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:09,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:09,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:09,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:09,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:09,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:09,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:09,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:09,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:09,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:09,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:09,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:09,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:09,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:09,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:09,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:09,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:09,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:09,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:09,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:09,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:09,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:09,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:09,232 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 13:35:09,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:09,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:09,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:09,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:09,271 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:09,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:09,272 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:09,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:09,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:09,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:09,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:09,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:09,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:09,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:09,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:09,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:09,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:09,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:09,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:09,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:09,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:09,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:09,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:09,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:09,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:09,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:09,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:09,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:09,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:09,279 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:35:09,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:09,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:09,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:09,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:09,800 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:09,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 13:35:09,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5a5e408/891b3fb153b94a4ea720fd97ae067115/FLAGc11e23a7a [2020-09-25 13:35:10,608 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:10,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 13:35:10,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5a5e408/891b3fb153b94a4ea720fd97ae067115/FLAGc11e23a7a [2020-09-25 13:35:10,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5a5e408/891b3fb153b94a4ea720fd97ae067115 [2020-09-25 13:35:10,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:10,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:10,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:10,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:10,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:10,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:10" (1/1) ... [2020-09-25 13:35:10,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:10, skipping insertion in model container [2020-09-25 13:35:10,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:10" (1/1) ... [2020-09-25 13:35:10,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:10,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:11,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:11,466 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:11,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:11,627 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11 WrapperNode [2020-09-25 13:35:11,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:11,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:11,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:11,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:11,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (1/1) ... [2020-09-25 13:35:11,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:11,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:11,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:11,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:11,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (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 13:35:11,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:11,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:11,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:13,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:13,390 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:13,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:13 BoogieIcfgContainer [2020-09-25 13:35:13,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:13,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:13,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:13,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:13,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:10" (1/3) ... [2020-09-25 13:35:13,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ba60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:13, skipping insertion in model container [2020-09-25 13:35:13,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:11" (2/3) ... [2020-09-25 13:35:13,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ba60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:13, skipping insertion in model container [2020-09-25 13:35:13,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:13" (3/3) ... [2020-09-25 13:35:13,409 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 13:35:13,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:13,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:13,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:13,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:13,492 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:13,492 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:13,492 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:13,492 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:13,493 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:13,493 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:13,493 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:35:13,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:13,540 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] [2020-09-25 13:35:13,540 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 13:35:13,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:13,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875568909] [2020-09-25 13:35:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-25 13:35:14,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:14,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:35:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:35:14,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:14,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:14,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:14,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:14,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:14,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:14,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:14,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:14,915 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 13:35:14,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875568909] [2020-09-25 13:35:14,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:14,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:14,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418643196] [2020-09-25 13:35:14,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:14,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:14,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:14,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:14,961 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:35:17,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:17,038 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 13:35:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:17,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 13:35:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:17,094 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 13:35:17,094 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:35:17,114 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 13:35:17,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:35:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 13:35:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 13:35:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 13:35:17,275 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 13:35:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:17,276 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 13:35:17,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 13:35:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:35:17,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:17,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:17,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:17,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:17,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 13:35:17,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:17,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915541450] [2020-09-25 13:35:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:35:20,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2781 [2020-09-25 13:35:20,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:20,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 13:35:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:20,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:20,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:35:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 13:35:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:35:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:20,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915541450] [2020-09-25 13:35:20,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:20,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:35:20,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386531325] [2020-09-25 13:35:20,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:35:20,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:20,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:35:20,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:20,589 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 13:35:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:22,569 INFO L93 Difference]: Finished difference Result 1437 states and 1858 transitions. [2020-09-25 13:35:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:35:22,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 13:35:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:22,576 INFO L225 Difference]: With dead ends: 1437 [2020-09-25 13:35:22,576 INFO L226 Difference]: Without dead ends: 909 [2020-09-25 13:35:22,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-25 13:35:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 859. [2020-09-25 13:35:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 13:35:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1029 transitions. [2020-09-25 13:35:22,617 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1029 transitions. Word has length 156 [2020-09-25 13:35:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:22,618 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1029 transitions. [2020-09-25 13:35:22,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:35:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1029 transitions. [2020-09-25 13:35:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:35:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:22,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:22,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:22,622 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:22,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:22,623 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 13:35:22,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:22,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846016961] [2020-09-25 13:35:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:22,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:35:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:35:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 13:35:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:27,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:27,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 13:35:27,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:27,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:27,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:28,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846016961] [2020-09-25 13:35:28,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:28,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:28,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997001123] [2020-09-25 13:35:28,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:28,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:28,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:28,086 INFO L87 Difference]: Start difference. First operand 859 states and 1029 transitions. Second operand 8 states. [2020-09-25 13:35:31,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:31,665 INFO L93 Difference]: Finished difference Result 2960 states and 3753 transitions. [2020-09-25 13:35:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:31,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 13:35:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:31,700 INFO L225 Difference]: With dead ends: 2960 [2020-09-25 13:35:31,700 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 13:35:31,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 13:35:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1995. [2020-09-25 13:35:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 13:35:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2467 transitions. [2020-09-25 13:35:31,830 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2467 transitions. Word has length 165 [2020-09-25 13:35:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:31,838 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2467 transitions. [2020-09-25 13:35:31,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2467 transitions. [2020-09-25 13:35:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 13:35:31,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:31,852 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, 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] [2020-09-25 13:35:31,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:31,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:31,853 INFO L82 PathProgramCache]: Analyzing trace with hash -892390744, now seen corresponding path program 1 times [2020-09-25 13:35:31,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:31,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461980467] [2020-09-25 13:35:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 13:35:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:35:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3954 [2020-09-25 13:35:35,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:35:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:35:35,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:36,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:35:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:36,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:36,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 13:35:36,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:35:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:35:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 181 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:35:36,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461980467] [2020-09-25 13:35:36,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:36,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:35:36,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248937189] [2020-09-25 13:35:36,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:35:36,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:36,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:35:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:36,624 INFO L87 Difference]: Start difference. First operand 1995 states and 2467 transitions. Second operand 6 states. [2020-09-25 13:35:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:38,604 INFO L93 Difference]: Finished difference Result 4775 states and 6150 transitions. [2020-09-25 13:35:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:35:38,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2020-09-25 13:35:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:38,633 INFO L225 Difference]: With dead ends: 4775 [2020-09-25 13:35:38,634 INFO L226 Difference]: Without dead ends: 2795 [2020-09-25 13:35:38,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2020-09-25 13:35:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2457. [2020-09-25 13:35:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2020-09-25 13:35:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 2989 transitions. [2020-09-25 13:35:38,736 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 2989 transitions. Word has length 235 [2020-09-25 13:35:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:38,737 INFO L479 AbstractCegarLoop]: Abstraction has 2457 states and 2989 transitions. [2020-09-25 13:35:38,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:35:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 2989 transitions. [2020-09-25 13:35:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 13:35:38,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:38,744 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, 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 13:35:38,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:38,745 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:38,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1766318445, now seen corresponding path program 1 times [2020-09-25 13:35:38,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:38,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964792295] [2020-09-25 13:35:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:38,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 13:35:43,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:43,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 13:35:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-09-25 13:35:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:35:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:43,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:43,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:43,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:35:43,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:35:43,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:35:43,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:43,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 13:35:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:35:44,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:35:44,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:44,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:35:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 13:35:44,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964792295] [2020-09-25 13:35:44,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:44,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:35:44,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930030310] [2020-09-25 13:35:44,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:44,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:44,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:44,192 INFO L87 Difference]: Start difference. First operand 2457 states and 2989 transitions. Second operand 5 states. [2020-09-25 13:35:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:46,410 INFO L93 Difference]: Finished difference Result 6148 states and 7584 transitions. [2020-09-25 13:35:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:35:46,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-09-25 13:35:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:46,431 INFO L225 Difference]: With dead ends: 6148 [2020-09-25 13:35:46,431 INFO L226 Difference]: Without dead ends: 3706 [2020-09-25 13:35:46,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2020-09-25 13:35:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3372. [2020-09-25 13:35:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3372 states. [2020-09-25 13:35:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 4107 transitions. [2020-09-25 13:35:46,534 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 4107 transitions. Word has length 242 [2020-09-25 13:35:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:46,534 INFO L479 AbstractCegarLoop]: Abstraction has 3372 states and 4107 transitions. [2020-09-25 13:35:46,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 4107 transitions. [2020-09-25 13:35:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-25 13:35:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:46,543 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, 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] [2020-09-25 13:35:46,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:46,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:46,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1773252098, now seen corresponding path program 1 times [2020-09-25 13:35:46,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:46,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426367068] [2020-09-25 13:35:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-25 13:35:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:35:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:51,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:35:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 13:35:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:35:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:51,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:35:51,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:51,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:51,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:35:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 13:35:52,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:35:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 13:35:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:52,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:52,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-25 13:35:52,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:52,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:35:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 13:35:52,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426367068] [2020-09-25 13:35:52,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:52,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:35:52,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967549710] [2020-09-25 13:35:52,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:35:52,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:52,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:35:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:52,869 INFO L87 Difference]: Start difference. First operand 3372 states and 4107 transitions. Second operand 11 states.