/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:35:36,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:35:36,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:35:37,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:35:37,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:35:37,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:35:37,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:35:37,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:35:37,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:35:37,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:35:37,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:35:37,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:35:37,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:35:37,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:35:37,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:35:37,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:35:37,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:35:37,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:35:37,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:35:37,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:35:37,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:35:37,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:35:37,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:35:37,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:35:37,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:35:37,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:35:37,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:35:37,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:35:37,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:35:37,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:35:37,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:35:37,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:35:37,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:35:37,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:35:37,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:35:37,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:35:37,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:35:37,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:35:37,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:35:37,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:35:37,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:35:37,061 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 06:35:37,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:35:37,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:35:37,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:35:37,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:35:37,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:35:37,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:35:37,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:35:37,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:35:37,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:35:37,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:35:37,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:35:37,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:35:37,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:35:37,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:35:37,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:35:37,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:35:37,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:35:37,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:35:37,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:35:37,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:35:37,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:35:37,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:35:37,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:35:37,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:35:37,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:35:37,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:35:37,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:35:37,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:35:37,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:35:37,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:35:37,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:35:37,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:35:37,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:35:37,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:35:37,613 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:35:37,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-25 06:35:37,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08a212a6c/990b10056cd64e92a8a53f8e0e7049e4/FLAGe0c2bcc07 [2020-09-25 06:35:38,235 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:35:38,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_2-2.c [2020-09-25 06:35:38,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08a212a6c/990b10056cd64e92a8a53f8e0e7049e4/FLAGe0c2bcc07 [2020-09-25 06:35:38,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08a212a6c/990b10056cd64e92a8a53f8e0e7049e4 [2020-09-25 06:35:38,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:35:38,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:35:38,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:35:38,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:35:38,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:35:38,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:38,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38, skipping insertion in model container [2020-09-25 06:35:38,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:38,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:35:38,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:35:38,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:35:38,871 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:35:38,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:35:38,904 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:35:38,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38 WrapperNode [2020-09-25 06:35:38,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:35:38,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:35:38,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:35:38,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:35:38,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:38,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:38,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:38,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:39,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:39,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:39,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (1/1) ... [2020-09-25 06:35:39,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:35:39,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:35:39,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:35:39,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:35:39,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (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 06:35:39,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:35:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:35:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 06:35:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 06:35:39,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:35:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:35:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 06:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 06:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:35:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:35:39,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:35:39,349 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:35:39,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:35:39 BoogieIcfgContainer [2020-09-25 06:35:39,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:35:39,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:35:39,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:35:39,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:35:39,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:35:38" (1/3) ... [2020-09-25 06:35:39,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:35:39, skipping insertion in model container [2020-09-25 06:35:39,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:35:38" (2/3) ... [2020-09-25 06:35:39,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:35:39, skipping insertion in model container [2020-09-25 06:35:39,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:35:39" (3/3) ... [2020-09-25 06:35:39,366 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-09-25 06:35:39,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:35:39,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:35:39,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:35:39,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:35:39,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:35:39,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:35:39,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:35:39,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:35:39,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:35:39,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:35:39,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:35:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:35:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:35:39,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:39,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:39,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:39,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 06:35:39,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:39,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-25 06:35:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:39,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:35:39,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 06:35:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:39,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:35:39,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:39,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:39,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:39,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:35:39,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:39,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:39,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:39,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:39,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:39,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:39,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:35:39,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:39,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:39,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:39,890 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 06:35:39,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-25 06:35:39,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:39,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:35:39,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260031] [2020-09-25 06:35:39,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:35:39,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:39,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:35:39,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:35:39,922 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 06:35:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:40,053 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 06:35:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:35:40,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:35:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:40,070 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:35:40,071 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 06:35:40,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:35:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 06:35:40,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 06:35:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:35:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:35:40,139 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 06:35:40,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:40,140 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:35:40,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:35:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:35:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:35:40,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:40,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:35:40,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:35:40,144 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:40,144 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 06:35:40,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:40,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905521492] [2020-09-25 06:35:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:40,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:35:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 06:35:40,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:40,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:35:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:35:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:40,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:40,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:35:40,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:40,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:40,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:40,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:35:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:40,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:40,423 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 06:35:40,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905521492] [2020-09-25 06:35:40,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:40,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:35:40,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537538314] [2020-09-25 06:35:40,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:35:40,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:40,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:35:40,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:35:40,427 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 06:35:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:40,471 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 06:35:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:35:40,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:35:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:40,474 INFO L225 Difference]: With dead ends: 50 [2020-09-25 06:35:40,474 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 06:35:40,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:35:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 06:35:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 06:35:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 06:35:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 06:35:40,489 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 06:35:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:40,490 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 06:35:40,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:35:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 06:35:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:35:40,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:40,493 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:35:40,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:35:40,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:40,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 06:35:40,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:40,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35375525] [2020-09-25 06:35:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:40,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:35:40,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 06:35:40,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:40,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:40,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:35:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:40,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:40,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:40,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:40,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:40,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:35:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 06:35:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:40,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:35:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:41,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:35:41,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:41,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:41,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:35:41,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:35:41,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35375525] [2020-09-25 06:35:41,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:41,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:35:41,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594344674] [2020-09-25 06:35:41,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:35:41,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:41,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:35:41,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:35:41,075 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 06:35:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:41,286 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 06:35:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:35:41,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 06:35:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:41,294 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:35:41,295 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 06:35:41,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 06:35:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 06:35:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:35:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 06:35:41,322 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 06:35:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:41,323 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 06:35:41,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:35:41,324 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 06:35:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:35:41,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:41,327 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:35:41,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:35:41,329 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-25 06:35:41,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:41,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874578917] [2020-09-25 06:35:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:35:41,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 06:35:41,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:35:41,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:35:41,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:41,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:41,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:41,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:35:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 06:35:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:35:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:41,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:35:41,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:41,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:35:41,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:41,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 06:35:41,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874578917] [2020-09-25 06:35:41,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:41,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:35:41,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317045434] [2020-09-25 06:35:41,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:35:41,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:41,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:35:41,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:41,810 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 06:35:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:41,954 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 06:35:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:35:41,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:35:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:41,963 INFO L225 Difference]: With dead ends: 72 [2020-09-25 06:35:41,963 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:35:41,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:35:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:35:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 06:35:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:35:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 06:35:41,992 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 34 [2020-09-25 06:35:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:41,993 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 06:35:41,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:35:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 06:35:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:35:41,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:41,996 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:35:41,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:35:41,998 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:41,999 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 06:35:41,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:42,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727674763] [2020-09-25 06:35:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:42,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:35:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-25 06:35:42,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:42,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:35:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:42,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:42,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:42,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:42,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:42,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:43,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:35:43,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 06:35:43,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:43,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:43,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:35:43,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:43,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:43,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:43,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:35:43,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:43,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:43,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:43,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 06:35:43,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:43,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:35:43,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727674763] [2020-09-25 06:35:43,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:35:43,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:35:43,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223315412] [2020-09-25 06:35:43,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:35:43,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:43,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:35:43,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:35:43,175 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 7 states. [2020-09-25 06:35:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:43,334 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 06:35:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:35:43,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 06:35:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:43,337 INFO L225 Difference]: With dead ends: 72 [2020-09-25 06:35:43,337 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:35:43,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:35:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 06:35:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:35:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 06:35:43,363 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 06:35:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:43,365 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 06:35:43,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:35:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 06:35:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:35:43,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:43,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 06:35:43,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:35:43,369 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:43,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:43,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 06:35:43,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:43,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202244913] [2020-09-25 06:35:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:48,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:35:48,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:35:48,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:48,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:35:48,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:35:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:48,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:49,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:35:49,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:49,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 788 [2020-09-25 06:35:49,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:49,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:49,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:35:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:49,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:49,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:35:49,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:35:49,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:49,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:49,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:35:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:49,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:35:49,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 06:35:49,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:49,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:49,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:49,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:49,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:35:49,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:49,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:49,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:35:49,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:49,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:49,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:35:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 06:35:49,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202244913] [2020-09-25 06:35:49,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:49,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:35:49,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128809674] [2020-09-25 06:35:49,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:35:49,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:35:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:35:49,450 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 7 states. [2020-09-25 06:35:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:49,574 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 06:35:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:35:49,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 06:35:49,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:49,576 INFO L225 Difference]: With dead ends: 72 [2020-09-25 06:35:49,576 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:35:49,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:35:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:35:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 06:35:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 06:35:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 06:35:49,587 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 51 [2020-09-25 06:35:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:49,587 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 06:35:49,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:35:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 06:35:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 06:35:49,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:49,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 06:35:49,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:35:49,590 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-25 06:35:49,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:49,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517303661] [2020-09-25 06:35:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:51,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 06:35:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:35:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1893 [2020-09-25 06:35:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:51,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:35:51,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:35:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:51,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:35:51,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:51,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:51,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:35:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:51,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 06:35:52,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-25 06:35:52,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 06:35:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:35:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:35:52,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:52,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 06:35:52,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:35:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:35:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:35:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:35:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:35:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:52,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:52,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:35:52,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:52,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 06:35:52,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517303661] [2020-09-25 06:35:52,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:52,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:35:52,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658914976] [2020-09-25 06:35:52,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:35:52,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:35:52,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:35:52,627 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 10 states. [2020-09-25 06:35:52,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:52,808 INFO L93 Difference]: Finished difference Result 96 states and 129 transitions. [2020-09-25 06:35:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:35:52,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-09-25 06:35:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:52,809 INFO L225 Difference]: With dead ends: 96 [2020-09-25 06:35:52,809 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:35:52,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:35:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:35:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:35:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:35:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:35:52,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2020-09-25 06:35:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:52,816 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:35:52,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:35:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:35:52,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:35:52,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:35:52,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:35:53,050 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 06:35:53,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:35:53,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:35:53,051 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 06:35:53,051 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 06:35:53,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:35:53,051 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-25 06:35:53,052 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2020-09-25 06:35:53,052 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2020-09-25 06:35:53,052 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2020-09-25 06:35:53,052 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 06:35:53,052 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-25 06:35:53,052 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 2) [2020-09-25 06:35:53,052 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 06:35:53,052 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2020-09-25 06:35:53,053 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 06:35:53,053 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-25 06:35:53,053 INFO L271 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2020-09-25 06:35:53,053 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= 2 |fibo2_#in~n|)) [2020-09-25 06:35:53,053 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 06:35:53,053 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= 2 |fibo2_#in~n|)) [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-25 06:35:53,054 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-25 06:35:53,055 INFO L268 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2020-09-25 06:35:53,055 INFO L268 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2020-09-25 06:35:53,055 INFO L271 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2020-09-25 06:35:53,055 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2020-09-25 06:35:53,055 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 06:35:53,055 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 06:35:53,056 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 fibo1_~n) .cse0) (and (= |fibo1_#t~ret0| 1) (< 1 fibo1_~n) .cse0))) [2020-09-25 06:35:53,056 INFO L268 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2020-09-25 06:35:53,056 INFO L268 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2020-09-25 06:35:53,056 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-25 06:35:53,056 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 06:35:53,056 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-25 06:35:53,056 INFO L268 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2020-09-25 06:35:53,057 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-25 06:35:53,057 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-25 06:35:53,057 INFO L268 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2020-09-25 06:35:53,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:35:53 BoogieIcfgContainer [2020-09-25 06:35:53,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:35:53,068 INFO L168 Benchmark]: Toolchain (without parser) took 14470.79 ms. Allocated memory was 139.5 MB in the beginning and 312.5 MB in the end (delta: 173.0 MB). Free memory was 102.7 MB in the beginning and 102.6 MB in the end (delta: 75.3 kB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:35:53,069 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:35:53,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.40 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 06:35:53,071 INFO L168 Benchmark]: Boogie Preprocessor took 114.16 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:35:53,071 INFO L168 Benchmark]: RCFGBuilder took 336.93 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 166.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:35:53,072 INFO L168 Benchmark]: TraceAbstraction took 13706.67 ms. Allocated memory was 202.4 MB in the beginning and 312.5 MB in the end (delta: 110.1 MB). Free memory was 166.5 MB in the beginning and 102.6 MB in the end (delta: 63.9 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:35:53,078 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.40 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.16 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.93 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 166.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13706.67 ms. Allocated memory was 202.4 MB in the beginning and 312.5 MB in the end (delta: 110.1 MB). Free memory was 166.5 MB in the beginning and 102.6 MB in the end (delta: 63.9 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 305 SDtfs, 160 SDslu, 1193 SDs, 0 SdLazy, 464 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 38 PreInvPairs, 50 NumberOfFragments, 48 HoareAnnotationTreeSize, 38 FomulaSimplifications, 142 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 18939 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 40/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...