/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:51,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:51,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:51,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:51,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:51,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:51,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:51,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:51,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:51,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:51,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:51,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:51,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:51,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:51,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:51,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:51,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:51,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:51,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:51,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:51,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:51,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:51,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:51,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:51,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:51,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:51,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:51,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:51,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:51,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:51,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:51,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:51,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:51,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:51,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:51,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:51,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:51,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:51,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:51,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:51,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:51,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:56:51,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:51,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:51,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:51,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:51,990 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:51,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:51,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:51,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:51,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:51,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:51,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:51,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:51,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:51,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:51,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:51,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:51,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:51,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:51,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:51,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:51,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:51,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:51,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:51,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:51,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:51,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:51,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:51,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:51,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:51,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:52,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:52,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:52,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:52,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:52,532 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:52,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 07:56:52,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e79ff7d13/b7f24ddb4f2e4114a47259f8f7bf6415/FLAGc2e6aef11 [2020-09-25 07:56:53,226 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:53,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 07:56:53,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e79ff7d13/b7f24ddb4f2e4114a47259f8f7bf6415/FLAGc2e6aef11 [2020-09-25 07:56:53,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e79ff7d13/b7f24ddb4f2e4114a47259f8f7bf6415 [2020-09-25 07:56:53,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:53,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:53,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:53,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:53,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:53,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53, skipping insertion in model container [2020-09-25 07:56:53,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:53,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:54,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:54,122 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:54,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:54,382 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:54,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54 WrapperNode [2020-09-25 07:56:54,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:54,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:54,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:54,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:54,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... [2020-09-25 07:56:54,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:54,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:54,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:54,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:54,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:54,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:54,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:54,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:56,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:56,205 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:56,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:56 BoogieIcfgContainer [2020-09-25 07:56:56,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:56,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:56,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:56,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:56,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:53" (1/3) ... [2020-09-25 07:56:56,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:56, skipping insertion in model container [2020-09-25 07:56:56,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:54" (2/3) ... [2020-09-25 07:56:56,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:56, skipping insertion in model container [2020-09-25 07:56:56,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:56" (3/3) ... [2020-09-25 07:56:56,242 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 07:56:56,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:56,273 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:56,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:56,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:56,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:56,357 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:56,357 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:56,357 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:56,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:56,358 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:56,358 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:56,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 07:56:56,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:56,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:56,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:56,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 07:56:56,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:56,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 07:56:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:57,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 07:56:57,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:57,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-09-25 07:56:57,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:57,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:56:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:56:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:56:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:57,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:57,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 07:56:58,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:58,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:56:58,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559254368] [2020-09-25 07:56:58,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:58,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:58,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:58,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:58,034 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:57:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:01,238 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 07:57:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:57:01,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 07:57:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:01,284 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 07:57:01,284 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 07:57:01,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 07:57:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 07:57:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 07:57:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 07:57:01,409 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 51 [2020-09-25 07:57:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:01,409 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 07:57:01,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 07:57:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 07:57:01,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:01,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:01,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:01,420 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1838754330, now seen corresponding path program 1 times [2020-09-25 07:57:01,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:01,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745980246] [2020-09-25 07:57:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:57:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-09-25 07:57:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:04,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:04,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:04,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:04,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:57:04,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:04,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:04,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:04,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:04,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:04,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:04,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 07:57:04,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:04,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:04,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:04,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745980246] [2020-09-25 07:57:04,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:04,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:05,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601157894] [2020-09-25 07:57:05,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:05,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:05,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:05,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:05,005 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 07:57:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:07,376 INFO L93 Difference]: Finished difference Result 1800 states and 2316 transitions. [2020-09-25 07:57:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:07,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-09-25 07:57:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:07,391 INFO L225 Difference]: With dead ends: 1800 [2020-09-25 07:57:07,392 INFO L226 Difference]: Without dead ends: 1088 [2020-09-25 07:57:07,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2020-09-25 07:57:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1040. [2020-09-25 07:57:07,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 07:57:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1243 transitions. [2020-09-25 07:57:07,474 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1243 transitions. Word has length 134 [2020-09-25 07:57:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:07,475 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1243 transitions. [2020-09-25 07:57:07,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1243 transitions. [2020-09-25 07:57:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 07:57:07,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:07,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:07,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:07,480 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:07,480 INFO L82 PathProgramCache]: Analyzing trace with hash -455767542, now seen corresponding path program 1 times [2020-09-25 07:57:07,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:07,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178469453] [2020-09-25 07:57:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:10,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:10,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:57:10,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2884 [2020-09-25 07:57:10,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:10,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:57:10,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 07:57:10,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:10,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:10,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:57:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:10,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:10,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:10,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:10,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:57:10,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:10,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:57:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:10,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178469453] [2020-09-25 07:57:10,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:10,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:10,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969673540] [2020-09-25 07:57:10,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:10,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:10,716 INFO L87 Difference]: Start difference. First operand 1040 states and 1243 transitions. Second operand 5 states. [2020-09-25 07:57:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:12,684 INFO L93 Difference]: Finished difference Result 2249 states and 2811 transitions. [2020-09-25 07:57:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:12,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 07:57:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:12,695 INFO L225 Difference]: With dead ends: 2249 [2020-09-25 07:57:12,695 INFO L226 Difference]: Without dead ends: 1374 [2020-09-25 07:57:12,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-09-25 07:57:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1350. [2020-09-25 07:57:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-09-25 07:57:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1629 transitions. [2020-09-25 07:57:12,750 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1629 transitions. Word has length 140 [2020-09-25 07:57:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:12,756 INFO L479 AbstractCegarLoop]: Abstraction has 1350 states and 1629 transitions. [2020-09-25 07:57:12,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1629 transitions. [2020-09-25 07:57:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 07:57:12,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:12,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:12,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:12,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:12,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash 144855952, now seen corresponding path program 1 times [2020-09-25 07:57:12,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:12,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595143366] [2020-09-25 07:57:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 07:57:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-09-25 07:57:13,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:13,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:57:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:14,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:14,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:14,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:14,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:14,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:14,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:57:14,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 07:57:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 07:57:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:14,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595143366] [2020-09-25 07:57:14,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:14,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:14,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284560225] [2020-09-25 07:57:14,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:14,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:14,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:14,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:14,307 INFO L87 Difference]: Start difference. First operand 1350 states and 1629 transitions. Second operand 7 states. [2020-09-25 07:57:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:16,404 INFO L93 Difference]: Finished difference Result 3225 states and 4035 transitions. [2020-09-25 07:57:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:16,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 07:57:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:16,420 INFO L225 Difference]: With dead ends: 3225 [2020-09-25 07:57:16,420 INFO L226 Difference]: Without dead ends: 2040 [2020-09-25 07:57:16,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2020-09-25 07:57:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1974. [2020-09-25 07:57:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2020-09-25 07:57:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2281 transitions. [2020-09-25 07:57:16,491 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2281 transitions. Word has length 156 [2020-09-25 07:57:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:16,491 INFO L479 AbstractCegarLoop]: Abstraction has 1974 states and 2281 transitions. [2020-09-25 07:57:16,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2281 transitions. [2020-09-25 07:57:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 07:57:16,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:16,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:16,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:16,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash 385731674, now seen corresponding path program 1 times [2020-09-25 07:57:16,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:16,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465570573] [2020-09-25 07:57:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:21,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 07:57:21,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:57:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 07:57:21,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:21,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:21,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 07:57:21,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:21,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:21,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:57:21,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:21,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:21,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 07:57:21,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:21,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:21,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:22,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:57:22,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 07:57:22,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:22,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:57:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-25 07:57:22,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465570573] [2020-09-25 07:57:22,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:22,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:22,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430588004] [2020-09-25 07:57:22,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:22,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:22,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:22,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:22,234 INFO L87 Difference]: Start difference. First operand 1974 states and 2281 transitions. Second operand 5 states. [2020-09-25 07:57:23,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:23,887 INFO L93 Difference]: Finished difference Result 2590 states and 3071 transitions. [2020-09-25 07:57:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:23,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-09-25 07:57:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:23,901 INFO L225 Difference]: With dead ends: 2590 [2020-09-25 07:57:23,901 INFO L226 Difference]: Without dead ends: 2588 [2020-09-25 07:57:23,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2020-09-25 07:57:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2282. [2020-09-25 07:57:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-09-25 07:57:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2689 transitions. [2020-09-25 07:57:23,968 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2689 transitions. Word has length 235 [2020-09-25 07:57:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:23,969 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 2689 transitions. [2020-09-25 07:57:23,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2689 transitions. [2020-09-25 07:57:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 07:57:23,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:23,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:23,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:23,975 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1167088697, now seen corresponding path program 1 times [2020-09-25 07:57:23,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:23,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774489511] [2020-09-25 07:57:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:29,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 07:57:29,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:29,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:57:29,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:29,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 07:57:29,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:29,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:29,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:57:29,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:29,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:29,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:29,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:57:29,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:29,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:29,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 07:57:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 07:57:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:29,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:57:29,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:29,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774489511] [2020-09-25 07:57:29,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:29,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:29,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310414529] [2020-09-25 07:57:29,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:29,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:29,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:29,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:29,662 INFO L87 Difference]: Start difference. First operand 2282 states and 2689 transitions. Second operand 8 states. [2020-09-25 07:57:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:33,014 INFO L93 Difference]: Finished difference Result 6939 states and 8553 transitions. [2020-09-25 07:57:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:33,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-09-25 07:57:33,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:33,044 INFO L225 Difference]: With dead ends: 6939 [2020-09-25 07:57:33,044 INFO L226 Difference]: Without dead ends: 4822 [2020-09-25 07:57:33,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:57:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2020-09-25 07:57:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 3411. [2020-09-25 07:57:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2020-09-25 07:57:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 4079 transitions. [2020-09-25 07:57:33,164 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 4079 transitions. Word has length 238 [2020-09-25 07:57:33,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:33,164 INFO L479 AbstractCegarLoop]: Abstraction has 3411 states and 4079 transitions. [2020-09-25 07:57:33,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 4079 transitions. [2020-09-25 07:57:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 07:57:33,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:33,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:33,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:33,174 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash -772494115, now seen corresponding path program 1 times [2020-09-25 07:57:33,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:33,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550205497] [2020-09-25 07:57:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 07:57:38,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:57:38,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:57:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 07:57:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:38,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:38,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:57:38,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:38,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:38,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:57:38,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:57:38,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 07:57:38,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 07:57:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:38,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550205497] [2020-09-25 07:57:38,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:38,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:57:38,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061302248] [2020-09-25 07:57:38,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:38,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:38,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:38,974 INFO L87 Difference]: Start difference. First operand 3411 states and 4079 transitions. Second operand 7 states.