/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:08,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:08,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:08,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:08,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:08,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:08,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:08,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:08,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:08,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:08,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:08,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:08,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:08,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:08,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:08,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:08,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:08,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:08,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:08,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:08,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:08,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:08,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:08,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:08,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:08,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:08,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:08,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:08,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:08,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:08,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:08,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:08,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:08,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:08,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:08,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:08,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:08,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:08,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:08,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:08,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:08,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:07:08,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:08,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:08,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:08,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:08,401 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:08,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:08,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:08,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:08,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:08,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:08,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:08,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:08,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:08,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:08,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:08,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:08,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:08,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:08,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:08,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:08,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:08,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:08,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:08,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:08,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:08,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:08,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:08,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:08,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:08,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:07:08,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:08,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:08,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:08,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:08,902 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:08,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 10:07:09,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b24207a9/9bfe928a5d7945b591f4a29b79f851d2/FLAG4383c5e72 [2020-09-25 10:07:09,672 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:09,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 10:07:09,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b24207a9/9bfe928a5d7945b591f4a29b79f851d2/FLAG4383c5e72 [2020-09-25 10:07:09,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b24207a9/9bfe928a5d7945b591f4a29b79f851d2 [2020-09-25 10:07:09,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:09,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:09,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:09,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:09,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:09,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:09" (1/1) ... [2020-09-25 10:07:09,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:09, skipping insertion in model container [2020-09-25 10:07:09,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:09" (1/1) ... [2020-09-25 10:07:09,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:10,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:10,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:10,527 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:10,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:10,796 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10 WrapperNode [2020-09-25 10:07:10,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:10,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:10,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:10,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:10,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... [2020-09-25 10:07:10,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:10,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:10,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:10,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:10,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:11,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:12,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:12,502 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:12,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:12 BoogieIcfgContainer [2020-09-25 10:07:12,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:12,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:12,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:12,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:12,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:09" (1/3) ... [2020-09-25 10:07:12,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:12, skipping insertion in model container [2020-09-25 10:07:12,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:10" (2/3) ... [2020-09-25 10:07:12,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:12, skipping insertion in model container [2020-09-25 10:07:12,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:12" (3/3) ... [2020-09-25 10:07:12,521 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-25 10:07:12,534 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:12,545 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:12,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:12,609 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:12,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:12,610 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:12,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:12,610 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:12,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:12,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:12,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:12,644 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:07:12,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:12,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:12,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:12,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-25 10:07:12,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:12,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 10:07:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 10:07:18,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:07:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:18,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 10:07:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:07:18,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:18,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:07:18,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:18,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:18,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 10:07:18,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:18,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:07:18,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404208732] [2020-09-25 10:07:18,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:18,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:18,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:18,493 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:07:21,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:21,474 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 10:07:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:07:21,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 10:07:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:21,523 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 10:07:21,523 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 10:07:21,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 10:07:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 10:07:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 10:07:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 10:07:21,655 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 156 [2020-09-25 10:07:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:21,656 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 10:07:21,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 10:07:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 10:07:21,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:21,673 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:21,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:21,674 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:21,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2141714320, now seen corresponding path program 1 times [2020-09-25 10:07:21,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:21,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895467579] [2020-09-25 10:07:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:26,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 10:07:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 10:07:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:26,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 10:07:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:26,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:07:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:07:27,909 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2020-09-25 10:07:28,262 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-09-25 10:07:28,664 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2020-09-25 10:07:29,043 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 47 [2020-09-25 10:07:29,377 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 46 [2020-09-25 10:07:29,746 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2020-09-25 10:07:30,066 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2020-09-25 10:07:30,386 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 43 [2020-09-25 10:07:30,701 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41 [2020-09-25 10:07:30,975 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 39 [2020-09-25 10:07:31,258 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 35 [2020-09-25 10:07:31,478 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 28 [2020-09-25 10:07:31,702 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 31 [2020-09-25 10:07:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:31,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:31,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:31,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:07:31,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:31,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:31,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:31,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:31,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:31,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 10:07:31,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:31,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:07:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:32,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895467579] [2020-09-25 10:07:32,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:32,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 10:07:32,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821232681] [2020-09-25 10:07:32,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 10:07:32,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:32,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 10:07:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=415, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:07:32,452 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 26 states. [2020-09-25 10:07:32,869 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-25 10:07:33,343 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:33,566 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-09-25 10:07:33,909 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:34,536 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 10:07:35,062 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:35,663 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 10:07:35,847 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 10:07:36,269 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:36,623 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-09-25 10:07:37,226 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:37,617 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:38,093 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:38,470 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:38,775 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-25 10:07:39,137 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:40,072 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:40,497 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:40,995 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:41,516 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:41,946 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-09-25 10:07:42,712 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:43,099 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:43,548 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-25 10:07:44,084 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:44,816 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-09-25 10:07:44,986 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-09-25 10:07:45,326 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2020-09-25 10:07:45,843 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-09-25 10:07:46,587 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2020-09-25 10:07:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:47,184 INFO L93 Difference]: Finished difference Result 2686 states and 3599 transitions. [2020-09-25 10:07:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-25 10:07:47,184 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 177 [2020-09-25 10:07:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:47,199 INFO L225 Difference]: With dead ends: 2686 [2020-09-25 10:07:47,200 INFO L226 Difference]: Without dead ends: 1938 [2020-09-25 10:07:47,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=1423, Invalid=2737, Unknown=0, NotChecked=0, Total=4160 [2020-09-25 10:07:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2020-09-25 10:07:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1562. [2020-09-25 10:07:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-09-25 10:07:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 1916 transitions. [2020-09-25 10:07:47,301 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 1916 transitions. Word has length 177 [2020-09-25 10:07:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:47,302 INFO L479 AbstractCegarLoop]: Abstraction has 1562 states and 1916 transitions. [2020-09-25 10:07:47,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 10:07:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 1916 transitions. [2020-09-25 10:07:47,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 10:07:47,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:47,310 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:47,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:47,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:47,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:47,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1776606615, now seen corresponding path program 1 times [2020-09-25 10:07:47,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:47,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966786550] [2020-09-25 10:07:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:47,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:52,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 10:07:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:07:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:52,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:07:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 10:07:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:07:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:52,931 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-09-25 10:07:53,074 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-09-25 10:07:53,358 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-09-25 10:07:53,584 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-09-25 10:07:53,816 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2020-09-25 10:07:54,045 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2020-09-25 10:07:54,267 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-09-25 10:07:54,518 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2020-09-25 10:07:54,761 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 45 [2020-09-25 10:07:55,005 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2020-09-25 10:07:55,252 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2020-09-25 10:07:55,494 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-09-25 10:07:55,694 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-09-25 10:07:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:55,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:07:55,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:55,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:55,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:55,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 10:07:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:55,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 10:07:55,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 10:07:55,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:55,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:07:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 10:07:56,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966786550] [2020-09-25 10:07:56,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:56,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:07:56,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808188749] [2020-09-25 10:07:56,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:07:56,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:56,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:07:56,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:07:56,299 INFO L87 Difference]: Start difference. First operand 1562 states and 1916 transitions. Second operand 21 states. [2020-09-25 10:07:57,940 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:07:58,183 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 10:07:58,409 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 10:07:58,646 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:07:58,853 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 10:07:59,481 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2020-09-25 10:07:59,948 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2020-09-25 10:08:00,391 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2020-09-25 10:08:00,622 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-09-25 10:08:00,972 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-09-25 10:08:01,320 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 10:08:01,674 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95