/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:55:29,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:55:29,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:55:29,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:55:29,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:55:29,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:55:29,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:55:29,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:55:29,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:55:29,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:55:29,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:55:29,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:55:29,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:55:29,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:55:29,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:55:29,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:55:29,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:55:29,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:55:29,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:55:29,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:55:29,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:55:29,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:55:29,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:55:29,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:55:29,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:55:29,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:55:29,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:55:29,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:55:29,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:55:29,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:55:29,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:55:29,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:55:29,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:55:29,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:55:29,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:55:29,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:55:29,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:55:29,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:55:29,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:55:29,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:55:29,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:55:29,406 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 [2020-09-24 22:55:29,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:55:29,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:55:29,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:55:29,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:55:29,456 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:55:29,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:55:29,457 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:55:29,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:55:29,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:55:29,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:55:29,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:55:29,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:55:29,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:55:29,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:55:29,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:55:29,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:55:29,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:55:29,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:55:29,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:55:29,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:55:29,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:55:29,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:55:29,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:55:29,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:55:29,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:55:29,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:55:29,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:55:29,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:55:29,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:55:29,462 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:55:29,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:55:29,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:55:29,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:55:29,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:55:29,979 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:55:29,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2020-09-24 22:55:30,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb6bf9fd/4839c6d472ff4730bebab04d0bb73f74/FLAG68ceb08ea [2020-09-24 22:55:30,620 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:55:30,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/n.c40.c [2020-09-24 22:55:30,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb6bf9fd/4839c6d472ff4730bebab04d0bb73f74/FLAG68ceb08ea [2020-09-24 22:55:30,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb6bf9fd/4839c6d472ff4730bebab04d0bb73f74 [2020-09-24 22:55:30,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:55:30,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:55:30,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:30,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:55:30,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:55:30,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:30" (1/1) ... [2020-09-24 22:55:30,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408a4c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:30, skipping insertion in model container [2020-09-24 22:55:30,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:55:30" (1/1) ... [2020-09-24 22:55:31,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:55:31,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:55:31,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:31,259 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:55:31,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:55:31,310 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:55:31,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31 WrapperNode [2020-09-24 22:55:31,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:55:31,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:55:31,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:55:31,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:55:31,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (1/1) ... [2020-09-24 22:55:31,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:55:31,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:55:31,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:55:31,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:55:31,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (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 [2020-09-24 22:55:31,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:55:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:55:31,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:55:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:55:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:55:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:55:31,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:55:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:55:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:55:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:55:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:55:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:55:31,805 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:55:31,805 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:55:31,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:31 BoogieIcfgContainer [2020-09-24 22:55:31,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:55:31,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:55:31,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:55:31,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:55:31,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:55:30" (1/3) ... [2020-09-24 22:55:31,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd539b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:31, skipping insertion in model container [2020-09-24 22:55:31,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:55:31" (2/3) ... [2020-09-24 22:55:31,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd539b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:55:31, skipping insertion in model container [2020-09-24 22:55:31,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:55:31" (3/3) ... [2020-09-24 22:55:31,829 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2020-09-24 22:55:31,840 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:55:31,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:55:31,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:55:31,899 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:55:31,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:55:31,899 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:55:31,899 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:55:31,899 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:55:31,900 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:55:31,900 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:55:31,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:55:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-09-24 22:55:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 22:55:31,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:31,931 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] [2020-09-24 22:55:31,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash 814682400, now seen corresponding path program 1 times [2020-09-24 22:55:31,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:31,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408631370] [2020-09-24 22:55:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:32,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:32,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:32,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:55:32,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-24 22:55:32,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:55:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:55:32,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:32,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:32,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:55:32,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:55:32,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:32,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408631370] [2020-09-24 22:55:32,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:32,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:55:32,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319772753] [2020-09-24 22:55:32,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:55:32,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:55:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:55:32,679 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-09-24 22:55:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:32,834 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-24 22:55:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:55:32,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-24 22:55:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:32,853 INFO L225 Difference]: With dead ends: 54 [2020-09-24 22:55:32,853 INFO L226 Difference]: Without dead ends: 35 [2020-09-24 22:55:32,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:55:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-24 22:55:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-24 22:55:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 22:55:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-24 22:55:32,905 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 25 [2020-09-24 22:55:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:32,906 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-24 22:55:32,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:55:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-24 22:55:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 22:55:32,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:32,907 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] [2020-09-24 22:55:32,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:55:32,908 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1790244750, now seen corresponding path program 1 times [2020-09-24 22:55:32,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:32,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695098525] [2020-09-24 22:55:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:33,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:55:33,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 22:55:33,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:55:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:55:33,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:55:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:33,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:33,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:55:33,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 22:55:33,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:33,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:33,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:55:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:33,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695098525] [2020-09-24 22:55:33,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:55:33,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:55:33,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104558899] [2020-09-24 22:55:33,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:55:33,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:33,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:55:33,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:55:33,247 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 4 states. [2020-09-24 22:55:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:33,419 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-24 22:55:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:55:33,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-24 22:55:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:33,421 INFO L225 Difference]: With dead ends: 51 [2020-09-24 22:55:33,422 INFO L226 Difference]: Without dead ends: 43 [2020-09-24 22:55:33,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:55:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-24 22:55:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-24 22:55:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-24 22:55:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-09-24 22:55:33,441 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 27 [2020-09-24 22:55:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:33,443 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-09-24 22:55:33,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:55:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-09-24 22:55:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 22:55:33,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:33,446 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 22:55:33,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:55:33,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:33,448 INFO L82 PathProgramCache]: Analyzing trace with hash -189710638, now seen corresponding path program 1 times [2020-09-24 22:55:33,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:33,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317396805] [2020-09-24 22:55:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 22:55:34,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:55:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-09-24 22:55:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:55:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:55:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:55:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:34,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:55:34,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:55:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:34,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317396805] [2020-09-24 22:55:34,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:34,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:55:34,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430292058] [2020-09-24 22:55:34,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:55:34,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:34,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:55:34,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:55:34,877 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2020-09-24 22:55:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:35,269 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-24 22:55:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:55:35,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-24 22:55:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:35,271 INFO L225 Difference]: With dead ends: 60 [2020-09-24 22:55:35,271 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 22:55:35,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:55:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 22:55:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-24 22:55:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 22:55:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-24 22:55:35,280 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 36 [2020-09-24 22:55:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:35,281 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-24 22:55:35,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:55:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-24 22:55:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 22:55:35,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:35,283 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 22:55:35,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:55:35,283 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1586350990, now seen corresponding path program 2 times [2020-09-24 22:55:35,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:35,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228386529] [2020-09-24 22:55:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:40,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 22:55:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:55:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:55:40,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:55:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:55:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:55:40,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:40,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:40,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:55:40,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:40,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:55:40,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:40,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:40,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228386529] [2020-09-24 22:55:40,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:40,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:55:40,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632924561] [2020-09-24 22:55:40,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:55:40,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:40,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:55:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:55:40,800 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 18 states. [2020-09-24 22:55:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:41,483 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-09-24 22:55:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 22:55:41,484 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-09-24 22:55:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:41,486 INFO L225 Difference]: With dead ends: 69 [2020-09-24 22:55:41,486 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 22:55:41,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 22:55:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 22:55:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-24 22:55:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:55:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-24 22:55:41,495 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 45 [2020-09-24 22:55:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:41,495 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-24 22:55:41,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:55:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-24 22:55:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 22:55:41,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:41,498 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:41,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:55:41,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:41,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1138463442, now seen corresponding path program 3 times [2020-09-24 22:55:41,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:41,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936019690] [2020-09-24 22:55:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:46,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:46,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 22:55:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:55:46,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:55:46,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 22:55:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:55:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:55:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:47,450 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-09-24 22:55:47,626 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-09-24 22:55:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:47,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:47,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:55:47,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:47,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:55:47,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:55:47,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:47,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:55:47,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:55:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:55:47,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936019690] [2020-09-24 22:55:47,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:47,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 22:55:47,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836595782] [2020-09-24 22:55:47,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 22:55:47,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:47,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 22:55:47,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-09-24 22:55:47,855 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 24 states. [2020-09-24 22:55:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:49,047 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-09-24 22:55:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 22:55:49,048 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 54 [2020-09-24 22:55:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:49,049 INFO L225 Difference]: With dead ends: 78 [2020-09-24 22:55:49,049 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 22:55:49,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=326, Invalid=1654, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 22:55:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 22:55:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-24 22:55:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 22:55:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2020-09-24 22:55:49,066 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 54 [2020-09-24 22:55:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:49,066 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2020-09-24 22:55:49,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 22:55:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2020-09-24 22:55:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 22:55:49,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:55:49,069 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:55:49,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:55:49,069 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:55:49,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:55:49,070 INFO L82 PathProgramCache]: Analyzing trace with hash -626630542, now seen corresponding path program 4 times [2020-09-24 22:55:49,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:55:49,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136925399] [2020-09-24 22:55:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:55:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:55:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:55:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 22:55:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 22:55:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:55:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 22:55:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:55:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:55:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:55:55,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:55:55,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:55:55,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:55:55,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 22:55:55,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:55:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:55:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:55:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:55:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:55:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:55:55,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136925399] [2020-09-24 22:55:55,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:55:55,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 22:55:55,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734183535] [2020-09-24 22:55:55,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 22:55:55,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:55:55,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 22:55:55,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:55:55,172 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 19 states. [2020-09-24 22:55:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:55:55,423 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-09-24 22:55:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:55:55,423 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-09-24 22:55:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:55:55,424 INFO L225 Difference]: With dead ends: 64 [2020-09-24 22:55:55,424 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:55:55,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:55:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:55:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:55:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:55:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:55:55,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-24 22:55:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:55:55,428 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:55:55,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 22:55:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:55:55,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:55:55,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:55:55,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:55:55,653 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 22:55:55,653 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 22:55:55,654 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:55:55,654 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= |old(#length)| |#length|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |~#y~0.base| |old(~#y~0.base)|)) [2020-09-24 22:55:55,655 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 22:55:55,655 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 22:55:55,655 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 22:55:55,655 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 22:55:55,655 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 22:55:55,655 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 22:55:55,656 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 22:55:55,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:55:55,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:55:55,656 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-09-24 22:55:55,657 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:55:55,657 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:55:55,657 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 23) no Hoare annotation was computed. [2020-09-24 22:55:55,657 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 22:55:55,657 INFO L268 CegarLoopResult]: For program point L19-1(lines 19 20) no Hoare annotation was computed. [2020-09-24 22:55:55,658 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 22:55:55,658 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 22:55:55,658 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 22:55:55,658 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 23) no Hoare annotation was computed. [2020-09-24 22:55:55,658 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 22:55:55,659 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 22:55:55,659 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 22:55:55,659 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 22:55:55,659 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 22:55:55,660 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2020-09-24 22:55:55,660 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 23) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-09-24 22:55:55,660 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 22:55:55,660 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-24 22:55:55,660 INFO L268 CegarLoopResult]: For program point L16(lines 8 23) no Hoare annotation was computed. [2020-09-24 22:55:55,661 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 22:55:55,661 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 22:55:55,661 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 22:55:55,661 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2020-09-24 22:55:55,661 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 22:55:55,661 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 22:55:55,662 INFO L264 CegarLoopResult]: At program point L12-5(lines 12 15) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= |old(~i~0)| 0)) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2020-09-24 22:55:55,662 INFO L268 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-09-24 22:55:55,676 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-24 22:55:55,682 INFO L168 Benchmark]: Toolchain (without parser) took 24704.45 ms. Allocated memory was 141.0 MB in the beginning and 364.4 MB in the end (delta: 223.3 MB). Free memory was 104.7 MB in the beginning and 142.2 MB in the end (delta: -37.4 MB). Peak memory consumption was 185.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:55,683 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 22:55:55,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.51 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:55,685 INFO L168 Benchmark]: Boogie Preprocessor took 129.89 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 181.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:55,686 INFO L168 Benchmark]: RCFGBuilder took 367.37 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 166.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:55,687 INFO L168 Benchmark]: TraceAbstraction took 23868.04 ms. Allocated memory was 203.9 MB in the beginning and 364.4 MB in the end (delta: 160.4 MB). Free memory was 165.6 MB in the beginning and 142.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 183.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:55:55,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.51 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.89 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 181.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.37 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 166.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23868.04 ms. Allocated memory was 203.9 MB in the beginning and 364.4 MB in the end (delta: 160.4 MB). Free memory was 165.6 MB in the beginning and 142.2 MB in the end (delta: 23.5 MB). Peak memory consumption was 183.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...