/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:01,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:01,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:01,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:01,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:01,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:01,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:01,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:01,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:01,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:01,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:01,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:01,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:01,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:01,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:01,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:01,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:01,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:01,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:01,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:01,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:01,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:01,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:01,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:01,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:01,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:01,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:01,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:01,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:01,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:01,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:01,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:01,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:01,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:01,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:01,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:01,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:01,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:01,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:01,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:01,625 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 04:30:01,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:01,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:01,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:01,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:01,680 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:01,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:01,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:01,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:01,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:01,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:01,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:01,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:01,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:01,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:01,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:01,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:01,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:01,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:01,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:01,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:01,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:01,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:01,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:01,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:01,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:01,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:01,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:01,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:01,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:01,687 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:30:02,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:02,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:02,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:02,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:02,215 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:02,217 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 04:30:02,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54e8b522e/3d7ac1e4a4874af4aeb5781f58f960bd/FLAG5f78f53c6 [2020-09-25 04:30:02,967 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:02,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 04:30:02,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54e8b522e/3d7ac1e4a4874af4aeb5781f58f960bd/FLAG5f78f53c6 [2020-09-25 04:30:03,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54e8b522e/3d7ac1e4a4874af4aeb5781f58f960bd [2020-09-25 04:30:03,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:03,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:03,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:03,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:03,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:03,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:03" (1/1) ... [2020-09-25 04:30:03,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c5c6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:03, skipping insertion in model container [2020-09-25 04:30:03,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:03" (1/1) ... [2020-09-25 04:30:03,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:03,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:03,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:03,837 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:04,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:04,106 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:04,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04 WrapperNode [2020-09-25 04:30:04,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:04,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:04,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:04,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:04,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (1/1) ... [2020-09-25 04:30:04,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:04,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:04,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:04,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:04,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (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 04:30:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:05,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:05,764 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:05,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:05 BoogieIcfgContainer [2020-09-25 04:30:05,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:05,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:05,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:05,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:03" (1/3) ... [2020-09-25 04:30:05,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495caddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:05, skipping insertion in model container [2020-09-25 04:30:05,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:04" (2/3) ... [2020-09-25 04:30:05,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495caddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:05, skipping insertion in model container [2020-09-25 04:30:05,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:05" (3/3) ... [2020-09-25 04:30:05,783 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 04:30:05,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:05,807 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:05,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:05,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:05,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:05,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:05,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:05,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:05,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:05,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:05,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 04:30:05,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:05,919 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] [2020-09-25 04:30:05,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 04:30:05,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:05,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728272508] [2020-09-25 04:30:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:06,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 04:30:06,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:30:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:07,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:30:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:07,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:07,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:07,110 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 04:30:07,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728272508] [2020-09-25 04:30:07,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:07,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:07,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607128590] [2020-09-25 04:30:07,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:07,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:07,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:07,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:07,146 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:09,191 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:30:09,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:09,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 04:30:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:09,218 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:30:09,218 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:30:09,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:30:09,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:30:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:30:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:30:09,331 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 53 [2020-09-25 04:30:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:09,331 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:30:09,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:30:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 04:30:09,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:09,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:09,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:09,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 04:30:09,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:09,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653032937] [2020-09-25 04:30:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:14,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 04:30:14,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4810 [2020-09-25 04:30:14,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:14,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:30:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:14,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:14,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:14,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:14,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:14,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:14,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:14,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:14,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:14,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 04:30:14,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:14,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:14,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:30:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:14,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653032937] [2020-09-25 04:30:14,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:14,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:14,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348098549] [2020-09-25 04:30:14,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:14,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:14,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:14,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:14,544 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:30:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:16,326 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 04:30:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:16,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 04:30:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:16,333 INFO L225 Difference]: With dead ends: 698 [2020-09-25 04:30:16,334 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 04:30:16,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 04:30:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 04:30:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 04:30:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 04:30:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 04:30:16,389 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 132 [2020-09-25 04:30:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:16,390 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 04:30:16,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 04:30:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 04:30:16,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:16,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:16,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:16,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:16,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:16,399 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 04:30:16,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:16,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731536024] [2020-09-25 04:30:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:16,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 04:30:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2666 [2020-09-25 04:30:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 04:30:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:19,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:30:19,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:19,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:19,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:19,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 04:30:19,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:19,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731536024] [2020-09-25 04:30:19,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:19,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:19,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793995029] [2020-09-25 04:30:19,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:19,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:19,357 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 5 states. [2020-09-25 04:30:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:21,303 INFO L93 Difference]: Finished difference Result 1700 states and 2254 transitions. [2020-09-25 04:30:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:21,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 04:30:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:21,319 INFO L225 Difference]: With dead ends: 1700 [2020-09-25 04:30:21,321 INFO L226 Difference]: Without dead ends: 1170 [2020-09-25 04:30:21,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 04:30:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-25 04:30:21,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1150. [2020-09-25 04:30:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-09-25 04:30:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1437 transitions. [2020-09-25 04:30:21,372 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1437 transitions. Word has length 142 [2020-09-25 04:30:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:21,377 INFO L479 AbstractCegarLoop]: Abstraction has 1150 states and 1437 transitions. [2020-09-25 04:30:21,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1437 transitions. [2020-09-25 04:30:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 04:30:21,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:21,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:21,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:21,389 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:21,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash -463375426, now seen corresponding path program 1 times [2020-09-25 04:30:21,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:21,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590928349] [2020-09-25 04:30:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:26,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 04:30:26,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:26,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4688 [2020-09-25 04:30:26,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:26,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:30:26,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 04:30:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:26,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:26,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:30:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:26,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:30:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:26,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:30:26,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 04:30:26,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:26,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:30:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:26,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590928349] [2020-09-25 04:30:26,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:26,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:30:26,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730630841] [2020-09-25 04:30:26,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:26,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:26,541 INFO L87 Difference]: Start difference. First operand 1150 states and 1437 transitions. Second operand 7 states. [2020-09-25 04:30:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:28,747 INFO L93 Difference]: Finished difference Result 2330 states and 3050 transitions. [2020-09-25 04:30:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:30:28,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-09-25 04:30:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:28,758 INFO L225 Difference]: With dead ends: 2330 [2020-09-25 04:30:28,758 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 04:30:28,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 04:30:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1015. [2020-09-25 04:30:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-25 04:30:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1257 transitions. [2020-09-25 04:30:28,815 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1257 transitions. Word has length 161 [2020-09-25 04:30:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:28,815 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1257 transitions. [2020-09-25 04:30:28,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1257 transitions. [2020-09-25 04:30:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 04:30:28,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:28,820 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:30:28,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:28,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash -482318154, now seen corresponding path program 1 times [2020-09-25 04:30:28,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:28,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626841163] [2020-09-25 04:30:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 04:30:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:30:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:33,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 04:30:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:33,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:33,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:33,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:33,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:33,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:33,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:34,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:34,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 04:30:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:30:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:34,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 04:30:34,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:34,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626841163] [2020-09-25 04:30:34,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:34,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:34,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805121717] [2020-09-25 04:30:34,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:34,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:34,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:34,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:34,403 INFO L87 Difference]: Start difference. First operand 1015 states and 1257 transitions. Second operand 7 states. [2020-09-25 04:30:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:36,814 INFO L93 Difference]: Finished difference Result 2195 states and 2772 transitions. [2020-09-25 04:30:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:30:36,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 04:30:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:36,824 INFO L225 Difference]: With dead ends: 2195 [2020-09-25 04:30:36,824 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 04:30:36,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 04:30:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1339. [2020-09-25 04:30:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-09-25 04:30:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1603 transitions. [2020-09-25 04:30:36,881 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1603 transitions. Word has length 215 [2020-09-25 04:30:36,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:36,882 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1603 transitions. [2020-09-25 04:30:36,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1603 transitions. [2020-09-25 04:30:36,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 04:30:36,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:36,888 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:36,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:36,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1465784404, now seen corresponding path program 1 times [2020-09-25 04:30:36,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:36,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389522509] [2020-09-25 04:30:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 04:30:41,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:30:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:30:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:42,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:42,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:42,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:42,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:42,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 04:30:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:42,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:42,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:42,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:30:42,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:42,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:42,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:42,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389522509] [2020-09-25 04:30:42,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:42,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:30:42,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887341936] [2020-09-25 04:30:42,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:30:42,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:42,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:30:42,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:30:42,435 INFO L87 Difference]: Start difference. First operand 1339 states and 1603 transitions. Second operand 8 states. [2020-09-25 04:30:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:45,478 INFO L93 Difference]: Finished difference Result 2851 states and 3480 transitions. [2020-09-25 04:30:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:30:45,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 04:30:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:45,487 INFO L225 Difference]: With dead ends: 2851 [2020-09-25 04:30:45,487 INFO L226 Difference]: Without dead ends: 1341 [2020-09-25 04:30:45,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:30:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-25 04:30:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1301. [2020-09-25 04:30:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-25 04:30:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1446 transitions. [2020-09-25 04:30:45,542 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1446 transitions. Word has length 225 [2020-09-25 04:30:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:45,542 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1446 transitions. [2020-09-25 04:30:45,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:30:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1446 transitions. [2020-09-25 04:30:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 04:30:45,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:45,547 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:45,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:45,547 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash -367593207, now seen corresponding path program 1 times [2020-09-25 04:30:45,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:45,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332498273] [2020-09-25 04:30:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 04:30:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:30:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:30:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:50,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:30:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:50,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:50,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:50,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:30:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:50,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:50,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:50,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:50,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:30:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 04:30:50,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:50,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:30:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:50,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332498273] [2020-09-25 04:30:50,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:50,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:50,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371973415] [2020-09-25 04:30:50,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:50,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:50,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:50,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:50,982 INFO L87 Difference]: Start difference. First operand 1301 states and 1446 transitions. Second operand 7 states.