/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:28:25,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:28:25,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:28:26,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:28:26,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:28:26,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:28:26,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:28:26,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:28:26,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:28:26,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:28:26,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:28:26,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:28:26,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:28:26,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:28:26,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:28:26,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:28:26,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:28:26,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:28:26,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:28:26,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:28:26,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:28:26,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:28:26,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:28:26,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:28:26,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:28:26,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:28:26,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:28:26,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:28:26,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:28:26,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:28:26,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:28:26,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:28:26,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:28:26,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:28:26,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:28:26,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:28:26,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:28:26,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:28:26,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:28:26,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:28:26,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:28:26,092 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 12:28:26,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:28:26,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:28:26,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:28:26,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:28:26,146 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:28:26,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:28:26,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:28:26,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:28:26,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:28:26,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:28:26,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:28:26,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:28:26,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:28:26,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:28:26,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:28:26,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:28:26,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:28:26,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:28:26,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:28:26,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:28:26,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:28:26,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:28:26,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:28:26,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:28:26,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:28:26,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:28:26,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:28:26,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:28:26,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:28:26,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:28:26,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:28:26,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:28:26,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:28:26,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:28:26,665 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:28:26,666 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 12:28:26,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47a9dabb0/650179a6cf754bafad40fbb122250ab2/FLAG5e61ed39d [2020-09-25 12:28:27,418 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:28:27,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 12:28:27,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47a9dabb0/650179a6cf754bafad40fbb122250ab2/FLAG5e61ed39d [2020-09-25 12:28:27,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47a9dabb0/650179a6cf754bafad40fbb122250ab2 [2020-09-25 12:28:27,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:28:27,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:28:27,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:27,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:28:27,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:28:27,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:27" (1/1) ... [2020-09-25 12:28:27,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116ad863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:27, skipping insertion in model container [2020-09-25 12:28:27,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:27" (1/1) ... [2020-09-25 12:28:27,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:28:27,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:28:28,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:28,494 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:28:28,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:28,654 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:28:28,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28 WrapperNode [2020-09-25 12:28:28,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:28,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:28:28,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:28:28,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:28:28,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (1/1) ... [2020-09-25 12:28:28,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:28:28,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:28:28,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:28:28,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:28:28,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (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 12:28:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:28:28,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:28:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:28:28,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:28:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:28:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:28:28,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:28:28,911 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:28:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:28:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:28:28,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:30,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:30,625 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:30,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:30 BoogieIcfgContainer [2020-09-25 12:28:30,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:30,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:30,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:30,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:30,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:28:27" (1/3) ... [2020-09-25 12:28:30,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d8d34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:30, skipping insertion in model container [2020-09-25 12:28:30,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:28" (2/3) ... [2020-09-25 12:28:30,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d8d34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:30, skipping insertion in model container [2020-09-25 12:28:30,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:30" (3/3) ... [2020-09-25 12:28:30,648 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 12:28:30,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:30,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:30,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:30,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:30,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:30,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:30,743 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:30,743 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:30,743 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:30,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:30,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 12:28:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:28:30,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:30,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:30,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 12:28:30,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:30,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49496620] [2020-09-25 12:28:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:31,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:32,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:28:32,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:28:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-09-25 12:28:32,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:32,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:28:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:32,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:32,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:32,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:28:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:32,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:32,362 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 12:28:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49496620] [2020-09-25 12:28:32,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:32,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:28:32,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864198881] [2020-09-25 12:28:32,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:28:32,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:32,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:28:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:32,394 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 12:28:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:36,038 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 12:28:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:28:36,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 12:28:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:36,073 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 12:28:36,073 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 12:28:36,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 12:28:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 12:28:36,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 12:28:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 12:28:36,216 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 69 [2020-09-25 12:28:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:36,217 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 12:28:36,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:28:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 12:28:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 12:28:36,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:36,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:36,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:36,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:36,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1110466945, now seen corresponding path program 1 times [2020-09-25 12:28:36,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:36,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763301728] [2020-09-25 12:28:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:36,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:39,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 12:28:41,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:28:41,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 12:28:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:28:41,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:41,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:28:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:41,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:41,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:28:41,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:28:41,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:41,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:41,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:28:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:41,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763301728] [2020-09-25 12:28:41,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:41,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:28:41,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627921328] [2020-09-25 12:28:41,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:28:41,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:41,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:28:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:41,635 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 5 states. [2020-09-25 12:28:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:43,716 INFO L93 Difference]: Finished difference Result 2673 states and 3757 transitions. [2020-09-25 12:28:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:28:43,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 12:28:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:43,729 INFO L225 Difference]: With dead ends: 2673 [2020-09-25 12:28:43,729 INFO L226 Difference]: Without dead ends: 1693 [2020-09-25 12:28:43,734 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 12:28:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-25 12:28:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1276. [2020-09-25 12:28:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-25 12:28:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1728 transitions. [2020-09-25 12:28:43,792 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1728 transitions. Word has length 153 [2020-09-25 12:28:43,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:43,794 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1728 transitions. [2020-09-25 12:28:43,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:28:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1728 transitions. [2020-09-25 12:28:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 12:28:43,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:43,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:43,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:43,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1882195166, now seen corresponding path program 1 times [2020-09-25 12:28:43,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:43,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93201717] [2020-09-25 12:28:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:45,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 12:28:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:28:48,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:48,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 12:28:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:48,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:28:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 12:28:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:49,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 12:28:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:49,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93201717] [2020-09-25 12:28:49,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:49,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:49,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859123606] [2020-09-25 12:28:49,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:49,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:49,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:49,550 INFO L87 Difference]: Start difference. First operand 1276 states and 1728 transitions. Second operand 7 states. [2020-09-25 12:28:52,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:52,639 INFO L93 Difference]: Finished difference Result 3264 states and 4547 transitions. [2020-09-25 12:28:52,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:52,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-25 12:28:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:52,652 INFO L225 Difference]: With dead ends: 3264 [2020-09-25 12:28:52,653 INFO L226 Difference]: Without dead ends: 2003 [2020-09-25 12:28:52,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-09-25 12:28:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1477. [2020-09-25 12:28:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1477 states. [2020-09-25 12:28:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1912 transitions. [2020-09-25 12:28:52,712 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1912 transitions. Word has length 221 [2020-09-25 12:28:52,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:52,713 INFO L479 AbstractCegarLoop]: Abstraction has 1477 states and 1912 transitions. [2020-09-25 12:28:52,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1912 transitions. [2020-09-25 12:28:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-09-25 12:28:52,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:52,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:28:52,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:52,723 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:52,723 INFO L82 PathProgramCache]: Analyzing trace with hash -592730585, now seen corresponding path program 1 times [2020-09-25 12:28:52,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:52,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126770519] [2020-09-25 12:28:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:52,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-09-25 12:28:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 12:28:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-09-25 12:28:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:57,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:28:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:57,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:57,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:57,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 12:28:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:57,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:58,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:58,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:28:58,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 12:28:58,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:58,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 12:28:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 65 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:28:58,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126770519] [2020-09-25 12:28:58,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:58,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:58,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667867861] [2020-09-25 12:28:58,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:58,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:58,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:58,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:58,692 INFO L87 Difference]: Start difference. First operand 1477 states and 1912 transitions. Second operand 8 states. [2020-09-25 12:29:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:29:01,451 INFO L93 Difference]: Finished difference Result 3577 states and 4867 transitions. [2020-09-25 12:29:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:29:01,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 300 [2020-09-25 12:29:01,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:29:01,470 INFO L225 Difference]: With dead ends: 3577 [2020-09-25 12:29:01,470 INFO L226 Difference]: Without dead ends: 2115 [2020-09-25 12:29:01,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:29:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-09-25 12:29:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1920. [2020-09-25 12:29:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-09-25 12:29:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2430 transitions. [2020-09-25 12:29:01,572 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2430 transitions. Word has length 300 [2020-09-25 12:29:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:29:01,575 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2430 transitions. [2020-09-25 12:29:01,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:29:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2430 transitions. [2020-09-25 12:29:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-09-25 12:29:01,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:29:01,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:29:01,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:29:01,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:29:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:29:01,585 INFO L82 PathProgramCache]: Analyzing trace with hash -887677092, now seen corresponding path program 1 times [2020-09-25 12:29:01,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:29:01,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150288093] [2020-09-25 12:29:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:29:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:01,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:06,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:06,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-09-25 12:29:06,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:29:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:29:06,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:06,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:29:06,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-25 12:29:06,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 12:29:06,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:29:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:06,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:06,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:06,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:29:06,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:06,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:29:06,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:06,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:29:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:29:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:29:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:29:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 12:29:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 12:29:06,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:06,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:29:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:29:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:29:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 12:29:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:29:07,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:29:07,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:29:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 12:29:07,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:29:07,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:29:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:29:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:29:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 12:29:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:29:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:29:07,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150288093] [2020-09-25 12:29:07,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:29:07,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:29:07,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554029328] [2020-09-25 12:29:07,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:29:07,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:29:07,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:29:07,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:29:07,338 INFO L87 Difference]: Start difference. First operand 1920 states and 2430 transitions. Second operand 7 states. [2020-09-25 12:29:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:29:12,090 INFO L93 Difference]: Finished difference Result 5430 states and 7527 transitions. [2020-09-25 12:29:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:29:12,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-09-25 12:29:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:29:12,119 INFO L225 Difference]: With dead ends: 5430 [2020-09-25 12:29:12,119 INFO L226 Difference]: Without dead ends: 3509 [2020-09-25 12:29:12,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:29:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2020-09-25 12:29:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3083. [2020-09-25 12:29:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3083 states. [2020-09-25 12:29:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4066 transitions. [2020-09-25 12:29:12,300 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4066 transitions. Word has length 309 [2020-09-25 12:29:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:29:12,301 INFO L479 AbstractCegarLoop]: Abstraction has 3083 states and 4066 transitions. [2020-09-25 12:29:12,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:29:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4066 transitions. [2020-09-25 12:29:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-09-25 12:29:12,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:29:12,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:29:12,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:29:12,330 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:29:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:29:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1170460672, now seen corresponding path program 1 times [2020-09-25 12:29:12,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:29:12,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146516153] [2020-09-25 12:29:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:29:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:29:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:29:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking...