/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:20,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:20,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:20,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:20,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:20,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:20,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:20,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:20,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:20,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:20,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:20,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:20,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:20,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:20,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:20,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:20,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:20,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:20,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:20,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:20,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:20,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:20,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:20,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:20,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:20,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:20,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:20,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:20,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:20,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:20,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:20,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:20,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:20,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:20,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:20,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:20,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:20,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:20,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:20,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:20,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:20,337 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 10:13:20,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:20,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:20,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:20,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:20,384 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:20,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:20,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:20,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:20,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:20,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:20,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:20,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:20,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:20,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:20,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:20,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:20,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:20,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:20,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:20,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:20,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:20,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:20,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:20,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:20,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:20,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:20,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:20,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:20,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:20,392 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:13:20,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:20,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:20,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:20,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:20,884 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:20,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 10:13:20,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59bee898b/a08947c73c3f4022ab9794d355d60712/FLAGb4cb59f3e [2020-09-25 10:13:21,658 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:21,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 10:13:21,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59bee898b/a08947c73c3f4022ab9794d355d60712/FLAGb4cb59f3e [2020-09-25 10:13:21,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59bee898b/a08947c73c3f4022ab9794d355d60712 [2020-09-25 10:13:21,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:21,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:21,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:21,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:21,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:21,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:21" (1/1) ... [2020-09-25 10:13:21,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:21, skipping insertion in model container [2020-09-25 10:13:21,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:21" (1/1) ... [2020-09-25 10:13:21,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:21,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:22,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:22,688 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:22,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:22,833 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:22,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22 WrapperNode [2020-09-25 10:13:22,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:22,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:22,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:22,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:22,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (1/1) ... [2020-09-25 10:13:22,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:22,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:22,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:22,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:23,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (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 10:13:23,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:23,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:23,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:23,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:23,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:23,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:24,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:24,810 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:24,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:24 BoogieIcfgContainer [2020-09-25 10:13:24,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:24,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:24,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:24,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:24,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:21" (1/3) ... [2020-09-25 10:13:24,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728cd5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:24, skipping insertion in model container [2020-09-25 10:13:24,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:22" (2/3) ... [2020-09-25 10:13:24,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728cd5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:24, skipping insertion in model container [2020-09-25 10:13:24,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:24" (3/3) ... [2020-09-25 10:13:24,836 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 10:13:24,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:24,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:24,889 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:24,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:24,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:24,928 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:24,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:24,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:24,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:24,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:24,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 10:13:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:13:24,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:24,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:24,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 10:13:25,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:25,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321236662] [2020-09-25 10:13:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:13:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-25 10:13:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:25,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 10:13:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:13:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:25,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:25,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:25,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:25,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:13:25,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:25,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:26,000 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 10:13:26,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321236662] [2020-09-25 10:13:26,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:26,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:26,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292542646] [2020-09-25 10:13:26,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:26,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:26,039 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 10:13:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:28,850 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 10:13:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:28,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 10:13:28,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:28,877 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 10:13:28,878 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 10:13:28,888 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 10:13:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 10:13:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 10:13:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 10:13:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 10:13:29,003 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 60 [2020-09-25 10:13:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:29,004 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 10:13:29,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 10:13:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 10:13:29,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:29,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:29,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:29,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1537556143, now seen corresponding path program 1 times [2020-09-25 10:13:29,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:29,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274828028] [2020-09-25 10:13:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:33,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 10:13:33,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4196 [2020-09-25 10:13:33,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:33,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 10:13:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:33,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:33,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:13:33,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:33,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:33,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 10:13:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:33,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274828028] [2020-09-25 10:13:33,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:33,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:33,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42779950] [2020-09-25 10:13:33,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:33,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:33,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:33,853 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 8 states. [2020-09-25 10:13:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:39,123 INFO L93 Difference]: Finished difference Result 2545 states and 3285 transitions. [2020-09-25 10:13:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:13:39,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 139 [2020-09-25 10:13:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:39,134 INFO L225 Difference]: With dead ends: 2545 [2020-09-25 10:13:39,134 INFO L226 Difference]: Without dead ends: 1754 [2020-09-25 10:13:39,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:13:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2020-09-25 10:13:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1272. [2020-09-25 10:13:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-09-25 10:13:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1511 transitions. [2020-09-25 10:13:39,199 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1511 transitions. Word has length 139 [2020-09-25 10:13:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:39,200 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1511 transitions. [2020-09-25 10:13:39,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1511 transitions. [2020-09-25 10:13:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:13:39,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:39,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:39,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:39,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 307088959, now seen corresponding path program 1 times [2020-09-25 10:13:39,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:39,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640931382] [2020-09-25 10:13:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:44,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 10:13:44,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:13:44,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:44,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 10:13:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:44,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:44,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:44,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:44,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:44,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:44,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:44,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:44,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:44,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 10:13:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:44,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:44,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:44,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:13:44,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:44,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640931382] [2020-09-25 10:13:44,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:44,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:44,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434947891] [2020-09-25 10:13:44,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:44,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:44,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:44,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:44,699 INFO L87 Difference]: Start difference. First operand 1272 states and 1511 transitions. Second operand 8 states. [2020-09-25 10:13:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:49,120 INFO L93 Difference]: Finished difference Result 4428 states and 5491 transitions. [2020-09-25 10:13:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:49,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 10:13:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:49,137 INFO L225 Difference]: With dead ends: 4428 [2020-09-25 10:13:49,137 INFO L226 Difference]: Without dead ends: 3171 [2020-09-25 10:13:49,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-09-25 10:13:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2208. [2020-09-25 10:13:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-09-25 10:13:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2582 transitions. [2020-09-25 10:13:49,233 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2582 transitions. Word has length 143 [2020-09-25 10:13:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:49,234 INFO L479 AbstractCegarLoop]: Abstraction has 2208 states and 2582 transitions. [2020-09-25 10:13:49,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2582 transitions. [2020-09-25 10:13:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 10:13:49,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:49,239 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:13:49,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:49,240 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -851647883, now seen corresponding path program 1 times [2020-09-25 10:13:49,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:49,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572537023] [2020-09-25 10:13:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:53,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:53,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:54,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 10:13:54,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:13:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:13:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:54,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:13:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 10:13:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:54,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:54,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:54,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:54,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:54,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:54,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:54,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:54,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:54,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 10:13:54,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:54,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:13:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:13:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:54,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:13:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 10:13:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:54,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 10:13:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:55,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572537023] [2020-09-25 10:13:55,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:55,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:55,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325218804] [2020-09-25 10:13:55,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:55,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:55,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:55,092 INFO L87 Difference]: Start difference. First operand 2208 states and 2582 transitions. Second operand 8 states. [2020-09-25 10:13:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:59,354 INFO L93 Difference]: Finished difference Result 5088 states and 6132 transitions. [2020-09-25 10:13:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:13:59,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-09-25 10:13:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:59,370 INFO L225 Difference]: With dead ends: 5088 [2020-09-25 10:13:59,371 INFO L226 Difference]: Without dead ends: 2895 [2020-09-25 10:13:59,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:13:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-09-25 10:13:59,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2519. [2020-09-25 10:13:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-09-25 10:13:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2919 transitions. [2020-09-25 10:13:59,445 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2919 transitions. Word has length 237 [2020-09-25 10:13:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:59,446 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2919 transitions. [2020-09-25 10:13:59,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2919 transitions. [2020-09-25 10:13:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 10:13:59,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:59,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:59,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:59,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:59,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1496168194, now seen corresponding path program 1 times [2020-09-25 10:13:59,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:59,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57062148] [2020-09-25 10:13:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:04,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:04,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 10:14:04,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:14:04,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 10:14:04,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:04,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:14:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 10:14:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:14:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:14:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:14:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:04,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:14:04,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:14:04,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:04,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:14:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:14:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:14:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:14:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:14:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:04,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:04,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 10:14:04,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 10:14:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:04,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:14:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:14:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:14:04,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 10:14:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:05,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:05,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:05,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:14:05,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:14:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 10:14:05,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:05,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:14:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:14:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:14:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 125 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:14:05,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57062148] [2020-09-25 10:14:05,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:14:05,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:14:05,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433809173] [2020-09-25 10:14:05,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:14:05,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:14:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:14:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:14:05,305 INFO L87 Difference]: Start difference. First operand 2519 states and 2919 transitions. Second operand 8 states. [2020-09-25 10:14:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:14:09,941 INFO L93 Difference]: Finished difference Result 5764 states and 6899 transitions. [2020-09-25 10:14:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:14:09,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-09-25 10:14:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:14:09,960 INFO L225 Difference]: With dead ends: 5764 [2020-09-25 10:14:09,960 INFO L226 Difference]: Without dead ends: 3481 [2020-09-25 10:14:09,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:14:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2020-09-25 10:14:10,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3409. [2020-09-25 10:14:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3409 states. [2020-09-25 10:14:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3409 states to 3409 states and 3997 transitions. [2020-09-25 10:14:10,087 INFO L78 Accepts]: Start accepts. Automaton has 3409 states and 3997 transitions. Word has length 260 [2020-09-25 10:14:10,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:14:10,088 INFO L479 AbstractCegarLoop]: Abstraction has 3409 states and 3997 transitions. [2020-09-25 10:14:10,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:14:10,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3409 states and 3997 transitions. [2020-09-25 10:14:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 10:14:10,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:14:10,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:14:10,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:14:10,094 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:14:10,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:14:10,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1883406937, now seen corresponding path program 1 times [2020-09-25 10:14:10,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:14:10,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834262773] [2020-09-25 10:14:10,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:14:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:11,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking...