/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:35,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:35,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:35,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:35,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:35,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:35,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:35,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:35,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:35,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:35,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:35,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:35,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:35,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:35,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:35,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:35,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:35,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:35,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:35,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:35,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:35,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:35,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:35,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:35,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:35,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:35,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:35,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:35,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:35,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:35,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:35,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:35,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:35,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:35,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:35,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:35,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:35,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:35,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:35,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:35,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:35,506 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 09:06:35,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:35,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:35,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:35,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:35,533 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:35,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:35,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:35,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:35,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:35,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:35,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:35,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:35,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:35,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:35,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:35,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:35,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:35,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:35,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:35,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:35,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:35,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:35,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:35,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:35,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:35,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:35,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:35,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:35,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:35,539 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:06:36,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:36,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:36,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:36,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:36,031 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:36,033 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 09:06:36,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3836772c9/41cd1805d5284bbea48fb2a33bd0c155/FLAGaf799f97f [2020-09-25 09:06:36,899 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:36,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 09:06:36,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3836772c9/41cd1805d5284bbea48fb2a33bd0c155/FLAGaf799f97f [2020-09-25 09:06:37,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3836772c9/41cd1805d5284bbea48fb2a33bd0c155 [2020-09-25 09:06:37,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:37,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:37,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:37,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:37,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:37,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:37" (1/1) ... [2020-09-25 09:06:37,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:37, skipping insertion in model container [2020-09-25 09:06:37,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:37" (1/1) ... [2020-09-25 09:06:37,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:37,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:37,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:37,973 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:38,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:38,485 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:38,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38 WrapperNode [2020-09-25 09:06:38,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:38,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:38,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:38,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:38,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:38,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:38,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:38,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:38,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:38,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:41,311 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:41,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:41,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:41 BoogieIcfgContainer [2020-09-25 09:06:41,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:41,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:41,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:41,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:41,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:37" (1/3) ... [2020-09-25 09:06:41,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7029afdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:41, skipping insertion in model container [2020-09-25 09:06:41,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (2/3) ... [2020-09-25 09:06:41,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7029afdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:41, skipping insertion in model container [2020-09-25 09:06:41,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:41" (3/3) ... [2020-09-25 09:06:41,344 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 09:06:41,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:41,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:41,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:41,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:41,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:41,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:41,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:41,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:41,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:41,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:41,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 09:06:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 09:06:41,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:41,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:41,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 09:06:41,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:41,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429872962] [2020-09-25 09:06:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 09:06:43,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1382 [2020-09-25 09:06:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 09:06:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:06:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:06:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:06:43,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,318 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 09:06:43,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429872962] [2020-09-25 09:06:43,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:43,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:43,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643031162] [2020-09-25 09:06:43,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:43,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:43,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:43,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:43,352 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 09:06:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:47,407 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 09:06:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:47,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 09:06:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:47,442 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 09:06:47,443 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 09:06:47,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 09:06:47,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 09:06:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 09:06:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 09:06:47,585 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 09:06:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:47,585 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 09:06:47,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 09:06:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 09:06:47,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:47,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:47,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:47,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:47,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:47,596 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 09:06:47,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:47,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103280931] [2020-09-25 09:06:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 09:06:52,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 09:06:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:52,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:06:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:06:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:52,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:06:52,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:52,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:52,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:06:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:52,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:06:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:53,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103280931] [2020-09-25 09:06:53,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:53,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:06:53,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691550204] [2020-09-25 09:06:53,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:53,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:53,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:53,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:53,164 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 8 states. [2020-09-25 09:06:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:59,192 INFO L93 Difference]: Finished difference Result 3098 states and 3878 transitions. [2020-09-25 09:06:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:06:59,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 09:06:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:59,212 INFO L225 Difference]: With dead ends: 3098 [2020-09-25 09:06:59,213 INFO L226 Difference]: Without dead ends: 2137 [2020-09-25 09:06:59,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2020-09-25 09:06:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1779. [2020-09-25 09:06:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-25 09:06:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions. [2020-09-25 09:06:59,325 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 137 [2020-09-25 09:06:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:59,328 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions. [2020-09-25 09:06:59,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions. [2020-09-25 09:06:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:06:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:59,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:59,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:59,346 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:59,346 INFO L82 PathProgramCache]: Analyzing trace with hash 466587141, now seen corresponding path program 1 times [2020-09-25 09:06:59,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:59,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643712287] [2020-09-25 09:06:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:07:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:07:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:07:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:07:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:07:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 09:07:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:04,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:07:04,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:04,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:07:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:04,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:07:04,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 09:07:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:07:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:05,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643712287] [2020-09-25 09:07:05,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:05,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 09:07:05,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983314979] [2020-09-25 09:07:05,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:07:05,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:05,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:07:05,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:07:05,129 INFO L87 Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 9 states. [2020-09-25 09:07:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:12,932 INFO L93 Difference]: Finished difference Result 3670 states and 4850 transitions. [2020-09-25 09:07:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:07:12,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-25 09:07:12,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:12,951 INFO L225 Difference]: With dead ends: 3670 [2020-09-25 09:07:12,952 INFO L226 Difference]: Without dead ends: 2531 [2020-09-25 09:07:12,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:07:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2020-09-25 09:07:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1808. [2020-09-25 09:07:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-25 09:07:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2279 transitions. [2020-09-25 09:07:13,029 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2279 transitions. Word has length 163 [2020-09-25 09:07:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:13,035 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2279 transitions. [2020-09-25 09:07:13,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:07:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2279 transitions. [2020-09-25 09:07:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 09:07:13,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:13,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:13,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:13,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1755075921, now seen corresponding path program 1 times [2020-09-25 09:07:13,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:13,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544780488] [2020-09-25 09:07:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 09:07:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:07:18,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 09:07:18,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:07:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:07:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:07:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:18,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:18,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:18,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:07:18,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 09:07:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 09:07:18,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 09:07:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:18,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544780488] [2020-09-25 09:07:18,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:18,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:07:18,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163870411] [2020-09-25 09:07:18,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:18,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:18,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:18,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:18,899 INFO L87 Difference]: Start difference. First operand 1808 states and 2279 transitions. Second operand 8 states. [2020-09-25 09:07:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:24,094 INFO L93 Difference]: Finished difference Result 3388 states and 4313 transitions. [2020-09-25 09:07:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:24,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2020-09-25 09:07:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:24,105 INFO L225 Difference]: With dead ends: 3388 [2020-09-25 09:07:24,105 INFO L226 Difference]: Without dead ends: 1597 [2020-09-25 09:07:24,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:07:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-09-25 09:07:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1560. [2020-09-25 09:07:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-09-25 09:07:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 1918 transitions. [2020-09-25 09:07:24,149 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 1918 transitions. Word has length 176 [2020-09-25 09:07:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:24,150 INFO L479 AbstractCegarLoop]: Abstraction has 1560 states and 1918 transitions. [2020-09-25 09:07:24,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 1918 transitions. [2020-09-25 09:07:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 09:07:24,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:24,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:24,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:24,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1015128611, now seen corresponding path program 1 times [2020-09-25 09:07:24,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:24,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463087605] [2020-09-25 09:07:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking...