/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=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:48,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:48,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:48,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:48,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:48,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:48,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:48,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:48,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:48,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:48,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:48,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:48,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:48,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:48,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:48,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:48,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:48,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:48,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:48,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:48,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:48,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:48,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:48,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:48,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:48,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:48,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:48,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:48,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:48,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:48,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:48,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:48,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:48,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:48,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:48,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:48,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:48,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:48,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:48,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:48,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:48,930 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 07:55:48,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:48,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:48,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:48,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:48,960 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:48,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:48,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:48,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:48,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:48,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:48,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:48,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:48,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:48,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:48,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:48,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:48,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:48,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:48,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:48,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:48,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:48,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:48,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:48,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:48,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:48,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:48,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:48,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:48,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:48,967 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:55:49,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:49,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:49,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:49,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:49,469 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:49,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 07:55:49,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ba4a150/a3ed7dca16e34e8a9e3ced3f9ff17e92/FLAG1398a21c4 [2020-09-25 07:55:50,249 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:50,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 07:55:50,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ba4a150/a3ed7dca16e34e8a9e3ced3f9ff17e92/FLAG1398a21c4 [2020-09-25 07:55:50,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56ba4a150/a3ed7dca16e34e8a9e3ced3f9ff17e92 [2020-09-25 07:55:50,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:50,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:50,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:50,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:50,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:50,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:50" (1/1) ... [2020-09-25 07:55:50,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dd7b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:50, skipping insertion in model container [2020-09-25 07:55:50,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:50" (1/1) ... [2020-09-25 07:55:50,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:50,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:51,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:51,219 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:51,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:51,367 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:51,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51 WrapperNode [2020-09-25 07:55:51,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:51,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:51,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:51,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:51,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (1/1) ... [2020-09-25 07:55:51,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:51,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:51,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:51,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:51,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (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 07:55:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:53,070 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:53,070 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:53,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:53 BoogieIcfgContainer [2020-09-25 07:55:53,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:53,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:53,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:53,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:53,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:50" (1/3) ... [2020-09-25 07:55:53,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75abfb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:53, skipping insertion in model container [2020-09-25 07:55:53,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:51" (2/3) ... [2020-09-25 07:55:53,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75abfb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:53, skipping insertion in model container [2020-09-25 07:55:53,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:53" (3/3) ... [2020-09-25 07:55:53,089 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 07:55:53,102 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:53,113 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:53,132 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:53,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:53,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:53,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:53,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:53,170 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:53,170 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:53,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:53,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:55:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 07:55:53,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:53,213 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] [2020-09-25 07:55:53,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:53,222 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 07:55:53,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:53,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913385352] [2020-09-25 07:55:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:54,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 07:55:54,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:55:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-09-25 07:55:54,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:54,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:55:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 07:55:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:55:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:54,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:55:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:54,746 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 07:55:54,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913385352] [2020-09-25 07:55:54,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:54,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:54,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225624636] [2020-09-25 07:55:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:54,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:54,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:54,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:54,785 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:55:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:56,885 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 07:55:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:56,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 07:55:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:56,910 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 07:55:56,910 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 07:55:56,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 07:55:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 07:55:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 07:55:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 07:55:57,031 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 64 [2020-09-25 07:55:57,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:57,032 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 07:55:57,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 07:55:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 07:55:57,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:57,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:57,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:57,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1704622095, now seen corresponding path program 1 times [2020-09-25 07:55:57,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:57,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694060025] [2020-09-25 07:55:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 07:56:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:56:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3700 [2020-09-25 07:56:00,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:00,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:00,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:00,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:56:00,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:00,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:00,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:00,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:00,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:01,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:01,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:01,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 07:56:01,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:01,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:01,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694060025] [2020-09-25 07:56:01,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:01,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:01,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356871276] [2020-09-25 07:56:01,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:01,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:01,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:01,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:01,097 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 07:56:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:02,779 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 07:56:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:02,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 07:56:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:02,788 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 07:56:02,789 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 07:56:02,792 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 07:56:02,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 07:56:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 07:56:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 07:56:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 07:56:02,861 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 143 [2020-09-25 07:56:02,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:02,866 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 07:56:02,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:02,866 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 07:56:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 07:56:02,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:02,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:02,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:02,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1280909557, now seen corresponding path program 1 times [2020-09-25 07:56:02,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:02,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32860692] [2020-09-25 07:56:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 07:56:04,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1716 [2020-09-25 07:56:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:56:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:56:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:04,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 07:56:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:05,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32860692] [2020-09-25 07:56:05,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:05,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:56:05,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115273418] [2020-09-25 07:56:05,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:05,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:05,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:05,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:05,112 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 8 states. [2020-09-25 07:56:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:07,805 INFO L93 Difference]: Finished difference Result 3045 states and 4270 transitions. [2020-09-25 07:56:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:56:07,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-09-25 07:56:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:07,822 INFO L225 Difference]: With dead ends: 3045 [2020-09-25 07:56:07,822 INFO L226 Difference]: Without dead ends: 2176 [2020-09-25 07:56:07,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-09-25 07:56:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2128. [2020-09-25 07:56:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2128 states. [2020-09-25 07:56:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2761 transitions. [2020-09-25 07:56:07,930 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2761 transitions. Word has length 155 [2020-09-25 07:56:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:07,931 INFO L479 AbstractCegarLoop]: Abstraction has 2128 states and 2761 transitions. [2020-09-25 07:56:07,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2761 transitions. [2020-09-25 07:56:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 07:56:07,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:07,946 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, 2, 2, 2, 2, 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] [2020-09-25 07:56:07,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:07,946 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:07,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:07,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1595178403, now seen corresponding path program 1 times [2020-09-25 07:56:07,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:07,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634731610] [2020-09-25 07:56:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 07:56:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:56:13,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:56:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:13,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:13,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:13,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:13,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 07:56:13,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:56:13,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:56:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:13,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 07:56:13,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:56:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:13,624 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 07:56:13,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634731610] [2020-09-25 07:56:13,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:13,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:13,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551315334] [2020-09-25 07:56:13,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:13,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:13,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:13,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:13,627 INFO L87 Difference]: Start difference. First operand 2128 states and 2761 transitions. Second operand 8 states. [2020-09-25 07:56:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:17,430 INFO L93 Difference]: Finished difference Result 6893 states and 10259 transitions. [2020-09-25 07:56:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:17,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-09-25 07:56:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:17,476 INFO L225 Difference]: With dead ends: 6893 [2020-09-25 07:56:17,476 INFO L226 Difference]: Without dead ends: 4780 [2020-09-25 07:56:17,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:56:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4780 states. [2020-09-25 07:56:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4780 to 4167. [2020-09-25 07:56:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-09-25 07:56:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 5665 transitions. [2020-09-25 07:56:17,669 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 5665 transitions. Word has length 232 [2020-09-25 07:56:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:17,670 INFO L479 AbstractCegarLoop]: Abstraction has 4167 states and 5665 transitions. [2020-09-25 07:56:17,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 5665 transitions. [2020-09-25 07:56:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 07:56:17,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:17,679 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, 2, 2, 2, 2, 2, 2, 2, 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 07:56:17,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:17,680 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:17,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash 522738282, now seen corresponding path program 1 times [2020-09-25 07:56:17,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:17,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902635134] [2020-09-25 07:56:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:17,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 07:56:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 07:56:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:56:22,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:56:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:22,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:22,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:23,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 07:56:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:23,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:56:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:23,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:23,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:23,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:23,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 07:56:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:23,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:23,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 104 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:56:23,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902635134] [2020-09-25 07:56:23,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:23,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:23,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770500295] [2020-09-25 07:56:23,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:23,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:23,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:23,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:23,648 INFO L87 Difference]: Start difference. First operand 4167 states and 5665 transitions. Second operand 9 states. [2020-09-25 07:56:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:28,065 INFO L93 Difference]: Finished difference Result 8832 states and 12155 transitions. [2020-09-25 07:56:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:28,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2020-09-25 07:56:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:28,091 INFO L225 Difference]: With dead ends: 8832 [2020-09-25 07:56:28,092 INFO L226 Difference]: Without dead ends: 4811 [2020-09-25 07:56:28,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2020-09-25 07:56:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4622. [2020-09-25 07:56:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4622 states. [2020-09-25 07:56:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 6177 transitions. [2020-09-25 07:56:28,229 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 6177 transitions. Word has length 236 [2020-09-25 07:56:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:28,229 INFO L479 AbstractCegarLoop]: Abstraction has 4622 states and 6177 transitions. [2020-09-25 07:56:28,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 6177 transitions. [2020-09-25 07:56:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-25 07:56:28,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:28,239 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:56:28,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:28,239 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:28,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2075531199, now seen corresponding path program 1 times [2020-09-25 07:56:28,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:28,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431870363] [2020-09-25 07:56:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:28,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-09-25 07:56:33,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:56:33,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:56:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:56:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:33,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:33,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:33,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:33,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:33,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 07:56:33,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:33,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:33,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:56:33,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 07:56:33,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:33,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:33,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:56:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:33,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431870363] [2020-09-25 07:56:33,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:33,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:56:33,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734531275] [2020-09-25 07:56:33,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:33,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:33,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:33,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:33,835 INFO L87 Difference]: Start difference. First operand 4622 states and 6177 transitions. Second operand 7 states. [2020-09-25 07:56:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:36,234 INFO L93 Difference]: Finished difference Result 10125 states and 13934 transitions. [2020-09-25 07:56:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:56:36,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-09-25 07:56:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:36,260 INFO L225 Difference]: With dead ends: 10125 [2020-09-25 07:56:36,260 INFO L226 Difference]: Without dead ends: 4248 [2020-09-25 07:56:36,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:56:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2020-09-25 07:56:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 3814. [2020-09-25 07:56:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3814 states. [2020-09-25 07:56:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 4847 transitions. [2020-09-25 07:56:36,399 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 4847 transitions. Word has length 255 [2020-09-25 07:56:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:36,399 INFO L479 AbstractCegarLoop]: Abstraction has 3814 states and 4847 transitions. [2020-09-25 07:56:36,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 4847 transitions. [2020-09-25 07:56:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 07:56:36,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:36,409 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:36,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:56:36,410 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:36,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash -926867743, now seen corresponding path program 1 times [2020-09-25 07:56:36,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:36,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137711435] [2020-09-25 07:56:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking...