/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=0.4 --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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:40:02,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:40:02,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:40:03,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:40:03,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:40:03,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:40:03,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:40:03,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:40:03,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:40:03,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:40:03,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:40:03,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:40:03,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:40:03,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:40:03,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:40:03,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:40:03,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:40:03,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:40:03,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:40:03,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:40:03,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:40:03,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:40:03,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:40:03,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:40:03,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:40:03,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:40:03,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:40:03,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:40:03,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:40:03,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:40:03,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:40:03,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:40:03,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:40:03,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:40:03,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:40:03,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:40:03,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:40:03,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:40:03,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:40:03,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:40:03,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:40:03,049 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 05:40:03,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:40:03,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:40:03,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:40:03,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:40:03,086 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:40:03,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:40:03,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:40:03,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:40:03,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:40:03,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:40:03,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:40:03,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:40:03,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:40:03,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:40:03,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:40:03,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:40:03,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:40:03,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:40:03,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:40:03,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:40:03,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:40:03,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:40:03,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:40:03,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:40:03,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:40:03,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:40:03,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:40:03,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:40:03,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:40:03,095 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=0.4;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:40:03,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:40:03,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:40:03,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:40:03,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:40:03,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:40:03,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 05:40:03,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee69109a0/f2cdd7383e4243afa252725fa86dcd30/FLAG160916e16 [2020-09-25 05:40:04,348 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:40:04,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 05:40:04,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee69109a0/f2cdd7383e4243afa252725fa86dcd30/FLAG160916e16 [2020-09-25 05:40:04,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee69109a0/f2cdd7383e4243afa252725fa86dcd30 [2020-09-25 05:40:04,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:40:04,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:40:04,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:04,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:40:04,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:40:04,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:04" (1/1) ... [2020-09-25 05:40:04,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:04, skipping insertion in model container [2020-09-25 05:40:04,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:04" (1/1) ... [2020-09-25 05:40:04,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:40:04,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:40:05,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:05,342 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:40:05,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:05,506 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:40:05,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05 WrapperNode [2020-09-25 05:40:05,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:05,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:40:05,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:40:05,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:40:05,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:40:05,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:40:05,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:40:05,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:40:05,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (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 05:40:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:40:05,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:40:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:40:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:40:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:40:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:40:05,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:40:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:40:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:40:05,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:40:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:40:07,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:40:07,917 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:40:07,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:07 BoogieIcfgContainer [2020-09-25 05:40:07,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:40:07,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:40:07,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:40:07,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:40:07,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:40:04" (1/3) ... [2020-09-25 05:40:07,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:07, skipping insertion in model container [2020-09-25 05:40:07,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05" (2/3) ... [2020-09-25 05:40:07,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af7c353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:07, skipping insertion in model container [2020-09-25 05:40:07,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:07" (3/3) ... [2020-09-25 05:40:07,939 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 05:40:07,951 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:40:07,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:40:07,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:40:08,028 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:40:08,028 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:40:08,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:40:08,034 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:40:08,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:40:08,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:40:08,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:40:08,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:40:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 05:40:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 05:40:08,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:08,086 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] [2020-09-25 05:40:08,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 05:40:08,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:08,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658661623] [2020-09-25 05:40:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:08,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 05:40:08,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:40:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-09-25 05:40:08,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:08,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:40:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:40:08,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:40:08,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:40:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:09,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:09,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:09,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:40:09,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:09,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:40:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:09,161 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 05:40:09,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658661623] [2020-09-25 05:40:09,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:40:09,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:40:09,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698874299] [2020-09-25 05:40:09,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:40:09,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:09,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:40:09,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:40:09,195 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 05:40:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:12,037 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 05:40:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:40:12,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 05:40:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:12,070 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 05:40:12,070 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 05:40:12,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 05:40:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 05:40:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 05:40:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 05:40:12,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 05:40:12,215 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 60 [2020-09-25 05:40:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:12,216 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 05:40:12,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:40:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 05:40:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 05:40:12,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:12,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:12,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:40:12,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:12,234 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-09-25 05:40:12,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:12,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432882904] [2020-09-25 05:40:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 05:40:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3599 [2020-09-25 05:40:15,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:15,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:40:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:40:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:15,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:15,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:16,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:16,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:16,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:40:16,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:16,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:16,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:16,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432882904] [2020-09-25 05:40:16,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:16,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:16,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569174936] [2020-09-25 05:40:16,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:16,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:16,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:16,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:16,155 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-25 05:40:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:18,869 INFO L93 Difference]: Finished difference Result 2007 states and 2506 transitions. [2020-09-25 05:40:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:18,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 05:40:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:18,884 INFO L225 Difference]: With dead ends: 2007 [2020-09-25 05:40:18,884 INFO L226 Difference]: Without dead ends: 1216 [2020-09-25 05:40:18,887 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 05:40:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-09-25 05:40:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1202. [2020-09-25 05:40:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-25 05:40:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1425 transitions. [2020-09-25 05:40:18,928 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1425 transitions. Word has length 139 [2020-09-25 05:40:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:18,932 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1425 transitions. [2020-09-25 05:40:18,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:18,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1425 transitions. [2020-09-25 05:40:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 05:40:18,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:18,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:18,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:18,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash 188553467, now seen corresponding path program 1 times [2020-09-25 05:40:18,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:18,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855907826] [2020-09-25 05:40:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 05:40:24,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 05:40:24,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 05:40:24,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 05:40:24,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:24,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:24,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:24,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:24,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:40:24,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 05:40:24,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:24,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 05:40:24,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:24,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855907826] [2020-09-25 05:40:24,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:24,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:24,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621866806] [2020-09-25 05:40:24,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:24,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:24,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:24,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:24,576 INFO L87 Difference]: Start difference. First operand 1202 states and 1425 transitions. Second operand 6 states. [2020-09-25 05:40:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:28,179 INFO L93 Difference]: Finished difference Result 3000 states and 3782 transitions. [2020-09-25 05:40:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:28,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-09-25 05:40:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:28,194 INFO L225 Difference]: With dead ends: 3000 [2020-09-25 05:40:28,194 INFO L226 Difference]: Without dead ends: 2002 [2020-09-25 05:40:28,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-09-25 05:40:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1966. [2020-09-25 05:40:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-25 05:40:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2446 transitions. [2020-09-25 05:40:28,280 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2446 transitions. Word has length 209 [2020-09-25 05:40:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:28,282 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 2446 transitions. [2020-09-25 05:40:28,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2446 transitions. [2020-09-25 05:40:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 05:40:28,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:28,287 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:28,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:28,288 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1811434454, now seen corresponding path program 1 times [2020-09-25 05:40:28,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:28,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120942057] [2020-09-25 05:40:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 05:40:33,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:40:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:40:33,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:40:33,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:33,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:33,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:33,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 05:40:33,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:33,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:33,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 05:40:33,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:33,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:33,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:33,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:34,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120942057] [2020-09-25 05:40:34,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:34,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:34,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548627884] [2020-09-25 05:40:34,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:34,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:34,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:34,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:34,017 INFO L87 Difference]: Start difference. First operand 1966 states and 2446 transitions. Second operand 7 states. [2020-09-25 05:40:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:37,667 INFO L93 Difference]: Finished difference Result 4005 states and 5056 transitions. [2020-09-25 05:40:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:40:37,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-25 05:40:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:37,683 INFO L225 Difference]: With dead ends: 4005 [2020-09-25 05:40:37,683 INFO L226 Difference]: Without dead ends: 2243 [2020-09-25 05:40:37,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:40:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-09-25 05:40:37,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2217. [2020-09-25 05:40:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-09-25 05:40:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2758 transitions. [2020-09-25 05:40:37,759 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2758 transitions. Word has length 233 [2020-09-25 05:40:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:37,760 INFO L479 AbstractCegarLoop]: Abstraction has 2217 states and 2758 transitions. [2020-09-25 05:40:37,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2758 transitions. [2020-09-25 05:40:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 05:40:37,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:37,765 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:40:37,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:37,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:37,766 INFO L82 PathProgramCache]: Analyzing trace with hash -510942541, now seen corresponding path program 1 times [2020-09-25 05:40:37,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:37,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058055448] [2020-09-25 05:40:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:37,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:38,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:42,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 05:40:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:40:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 05:40:42,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:42,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 05:40:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:40:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:40:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:42,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:42,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:42,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:42,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:42,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:42,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 05:40:43,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 05:40:43,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:43,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:40:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:43,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 05:40:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:43,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:43,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 05:40:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:43,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:43,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058055448] [2020-09-25 05:40:43,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:43,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:40:43,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784852207] [2020-09-25 05:40:43,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:40:43,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:43,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:40:43,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:40:43,485 INFO L87 Difference]: Start difference. First operand 2217 states and 2758 transitions. Second operand 9 states. [2020-09-25 05:40:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:48,761 INFO L93 Difference]: Finished difference Result 5557 states and 7075 transitions. [2020-09-25 05:40:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:40:48,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2020-09-25 05:40:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:48,781 INFO L225 Difference]: With dead ends: 5557 [2020-09-25 05:40:48,782 INFO L226 Difference]: Without dead ends: 3544 [2020-09-25 05:40:48,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:40:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2020-09-25 05:40:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3312. [2020-09-25 05:40:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-09-25 05:40:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4043 transitions. [2020-09-25 05:40:48,886 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4043 transitions. Word has length 242 [2020-09-25 05:40:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:48,887 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 4043 transitions. [2020-09-25 05:40:48,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:40:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4043 transitions. [2020-09-25 05:40:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 05:40:48,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:48,894 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:40:48,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:48,894 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash -344198728, now seen corresponding path program 1 times [2020-09-25 05:40:48,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:48,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117220726] [2020-09-25 05:40:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking...