/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:25,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:25,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:25,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:25,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:25,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:25,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:25,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:25,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:25,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:25,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:25,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:25,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:25,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:25,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:25,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:25,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:25,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:25,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:25,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:25,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:25,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:25,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:25,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:25,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:25,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:25,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:25,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:25,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:25,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:25,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:25,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:25,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:25,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:25,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:25,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:25,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:25,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:25,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:25,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:25,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:25,983 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 13:35:26,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:26,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:26,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:26,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:26,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:26,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:26,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:26,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:26,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:26,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:26,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:26,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:26,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:26,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:26,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:26,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:26,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:26,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:26,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:26,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:26,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:26,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:26,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:26,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:26,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:26,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:26,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:26,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:26,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:26,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:26,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:26,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:26,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:26,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:26,542 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:26,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 13:35:26,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b45a340bb/eb28faff690c484099edd3a97cf8d72d/FLAG01a966905 [2020-09-25 13:35:27,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:27,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 13:35:27,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b45a340bb/eb28faff690c484099edd3a97cf8d72d/FLAG01a966905 [2020-09-25 13:35:27,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b45a340bb/eb28faff690c484099edd3a97cf8d72d [2020-09-25 13:35:27,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:27,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:27,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:27,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:27,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:27,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:27" (1/1) ... [2020-09-25 13:35:27,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:27, skipping insertion in model container [2020-09-25 13:35:27,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:27" (1/1) ... [2020-09-25 13:35:27,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:27,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:28,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:28,352 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:28,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:28,515 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:28,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28 WrapperNode [2020-09-25 13:35:28,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:28,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:28,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:28,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:28,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... [2020-09-25 13:35:28,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:28,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:28,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:28,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:28,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:28,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:28,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:28,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:28,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:31,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:31,356 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:31,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:31 BoogieIcfgContainer [2020-09-25 13:35:31,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:31,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:31,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:31,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:31,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:27" (1/3) ... [2020-09-25 13:35:31,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7029afdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:31, skipping insertion in model container [2020-09-25 13:35:31,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:28" (2/3) ... [2020-09-25 13:35:31,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7029afdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:31, skipping insertion in model container [2020-09-25 13:35:31,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:31" (3/3) ... [2020-09-25 13:35:31,391 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 13:35:31,402 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:31,421 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:31,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:31,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:31,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:31,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:31,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:31,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:31,487 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:31,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:31,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 13:35:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:35:31,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:31,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:31,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 13:35:31,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:31,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429872962] [2020-09-25 13:35:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:32,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:35:32,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-09-25 13:35:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:32,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:32,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:35:32,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:35:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:33,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:33,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:35:33,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:33,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:35:33,113 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 13:35:33,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429872962] [2020-09-25 13:35:33,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:33,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:33,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643031162] [2020-09-25 13:35:33,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:33,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:33,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:33,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:33,157 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 13:35:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:36,794 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 13:35:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:36,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 13:35:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:36,831 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 13:35:36,831 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 13:35:36,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 13:35:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 13:35:36,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 13:35:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 13:35:36,958 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 13:35:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:36,959 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 13:35:36,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 13:35:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:35:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:36,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:36,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:36,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:36,970 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 13:35:36,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:36,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100263244] [2020-09-25 13:35:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:37,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:35:42,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:35:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:35:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:35:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:42,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:35:42,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:35:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:35:42,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 13:35:42,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:42,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:42,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:35:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:42,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100263244] [2020-09-25 13:35:42,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:42,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:35:42,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879545648] [2020-09-25 13:35:42,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:42,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:42,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:42,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:42,481 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 8 states. [2020-09-25 13:35:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:47,734 INFO L93 Difference]: Finished difference Result 3098 states and 3878 transitions. [2020-09-25 13:35:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:35:47,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 13:35:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:47,753 INFO L225 Difference]: With dead ends: 3098 [2020-09-25 13:35:47,753 INFO L226 Difference]: Without dead ends: 2137 [2020-09-25 13:35:47,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:35:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2020-09-25 13:35:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1779. [2020-09-25 13:35:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-25 13:35:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions. [2020-09-25 13:35:47,890 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 137 [2020-09-25 13:35:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:47,893 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions. [2020-09-25 13:35:47,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions. [2020-09-25 13:35:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 13:35:47,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:47,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:47,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:47,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash 466587141, now seen corresponding path program 1 times [2020-09-25 13:35:47,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:47,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313603663] [2020-09-25 13:35:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:52,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 13:35:52,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:52,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:35:52,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:52,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:52,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:35:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:53,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:35:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:35:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:35:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:53,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 13:35:53,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:35:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:53,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313603663] [2020-09-25 13:35:53,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:53,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:53,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859654087] [2020-09-25 13:35:53,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:53,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:53,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:53,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:53,433 INFO L87 Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 7 states. [2020-09-25 13:35:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:58,039 INFO L93 Difference]: Finished difference Result 4058 states and 5328 transitions. [2020-09-25 13:35:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:35:58,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 13:35:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:58,056 INFO L225 Difference]: With dead ends: 4058 [2020-09-25 13:35:58,057 INFO L226 Difference]: Without dead ends: 2296 [2020-09-25 13:35:58,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-09-25 13:35:58,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2229. [2020-09-25 13:35:58,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2229 states. [2020-09-25 13:35:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2747 transitions. [2020-09-25 13:35:58,123 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2747 transitions. Word has length 163 [2020-09-25 13:35:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:58,124 INFO L479 AbstractCegarLoop]: Abstraction has 2229 states and 2747 transitions. [2020-09-25 13:35:58,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2747 transitions. [2020-09-25 13:35:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 13:35:58,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:58,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:58,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:58,127 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:58,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1755075921, now seen corresponding path program 1 times [2020-09-25 13:35:58,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:58,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781525907] [2020-09-25 13:35:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:58,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 13:36:03,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:36:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:36:03,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:36:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:36:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:36:03,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:36:03,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:03,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:36:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:36:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:03,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:36:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:03,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781525907] [2020-09-25 13:36:03,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:03,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:03,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163870411] [2020-09-25 13:36:03,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:03,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:03,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:03,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:03,778 INFO L87 Difference]: Start difference. First operand 2229 states and 2747 transitions. Second operand 7 states. [2020-09-25 13:36:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:08,887 INFO L93 Difference]: Finished difference Result 4077 states and 5144 transitions. [2020-09-25 13:36:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:08,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 13:36:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:08,904 INFO L225 Difference]: With dead ends: 4077 [2020-09-25 13:36:08,905 INFO L226 Difference]: Without dead ends: 2928 [2020-09-25 13:36:08,909 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 13:36:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-09-25 13:36:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2693. [2020-09-25 13:36:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2693 states. [2020-09-25 13:36:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3341 transitions. [2020-09-25 13:36:08,996 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3341 transitions. Word has length 176 [2020-09-25 13:36:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:08,997 INFO L479 AbstractCegarLoop]: Abstraction has 2693 states and 3341 transitions. [2020-09-25 13:36:08,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3341 transitions. [2020-09-25 13:36:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 13:36:09,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:09,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:09,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:09,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1151458182, now seen corresponding path program 1 times [2020-09-25 13:36:09,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:09,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047467871] [2020-09-25 13:36:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:09,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:14,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 13:36:14,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:36:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:36:14,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:14,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:36:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:36:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-09-25 13:36:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:14,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:36:14,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:36:14,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:14,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:36:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:36:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:14,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:14,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 13:36:14,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 13:36:14,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:14,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:14,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 13:36:14,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:14,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 13:36:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:14,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:14,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 13:36:14,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:14,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:14,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:36:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 45 proven. 114 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:15,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047467871] [2020-09-25 13:36:15,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:15,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:36:15,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646045826] [2020-09-25 13:36:15,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:36:15,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:15,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:36:15,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:36:15,256 INFO L87 Difference]: Start difference. First operand 2693 states and 3341 transitions. Second operand 15 states.