/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/s4if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:18:31,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:18:31,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:18:31,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:18:31,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:18:31,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:18:31,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:18:31,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:18:31,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:18:31,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:18:31,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:18:31,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:18:31,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:18:31,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:18:31,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:18:31,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:18:31,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:18:31,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:18:31,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:18:31,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:18:31,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:18:31,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:18:31,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:18:31,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:18:31,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:18:31,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:18:31,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:18:31,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:18:31,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:18:31,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:18:31,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:18:31,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:18:31,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:18:31,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:18:31,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:18:31,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:18:31,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:18:31,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:18:31,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:18:31,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:18:31,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:18:31,508 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 [2020-10-28 09:18:31,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:18:31,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:18:31,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:18:31,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:18:31,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:18:31,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:18:31,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:18:31,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:18:31,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:18:31,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:18:31,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:18:31,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:18:31,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:18:31,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:18:31,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:18:31,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:18:31,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:18:31,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:18:31,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:18:31,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:18:31,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:18:31,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:18:31,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:18:31,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:18:31,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:18:31,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:18:31,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:18:31,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:18:31,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:18:31,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:18:32,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:18:32,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:18:32,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:18:32,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:18:32,056 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:18:32,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4if.c [2020-10-28 09:18:32,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58fd0f82a/c03be6115cfd4011ab57c7437e95dd54/FLAG4e54766c3 [2020-10-28 09:18:32,805 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:18:32,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4if.c [2020-10-28 09:18:32,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58fd0f82a/c03be6115cfd4011ab57c7437e95dd54/FLAG4e54766c3 [2020-10-28 09:18:33,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58fd0f82a/c03be6115cfd4011ab57c7437e95dd54 [2020-10-28 09:18:33,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:18:33,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:18:33,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:18:33,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:18:33,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:18:33,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f263285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33, skipping insertion in model container [2020-10-28 09:18:33,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:18:33,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:18:33,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:18:33,421 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:18:33,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:18:33,469 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:18:33,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33 WrapperNode [2020-10-28 09:18:33,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:18:33,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:18:33,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:18:33,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:18:33,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (1/1) ... [2020-10-28 09:18:33,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:18:33,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:18:33,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:18:33,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:18:33,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (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 [2020-10-28 09:18:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:18:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:18:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:18:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:18:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:18:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:18:34,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:18:34,326 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:18:34,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:34 BoogieIcfgContainer [2020-10-28 09:18:34,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:18:34,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:18:34,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:18:34,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:18:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:18:33" (1/3) ... [2020-10-28 09:18:34,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d676c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:34, skipping insertion in model container [2020-10-28 09:18:34,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:18:33" (2/3) ... [2020-10-28 09:18:34,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12d676c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:18:34, skipping insertion in model container [2020-10-28 09:18:34,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:18:34" (3/3) ... [2020-10-28 09:18:34,343 INFO L111 eAbstractionObserver]: Analyzing ICFG s4if.c [2020-10-28 09:18:34,355 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:18:34,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:18:34,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:18:34,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:18:34,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:18:34,407 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:18:34,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:18:34,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:18:34,407 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:18:34,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:18:34,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:18:34,428 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-28 09:18:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:18:34,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:34,437 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] [2020-10-28 09:18:34,438 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-28 09:18:34,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:34,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154288365] [2020-10-28 09:18:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:34,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:35,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:35,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:18:35,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:18:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-28 09:18:35,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:35,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:18:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:18:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:35,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:35,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:18:35,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:35,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:35,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:35,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:35,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:18:35,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:35,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:35,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:18:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:18:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:18:35,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154288365] [2020-10-28 09:18:35,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:35,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:18:35,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727278395] [2020-10-28 09:18:35,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:18:35,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:18:35,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:18:35,547 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-28 09:18:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:35,705 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-28 09:18:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:18:35,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-28 09:18:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:35,718 INFO L225 Difference]: With dead ends: 59 [2020-10-28 09:18:35,718 INFO L226 Difference]: Without dead ends: 26 [2020-10-28 09:18:35,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:18:35,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-28 09:18:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-28 09:18:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 09:18:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-28 09:18:35,776 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-28 09:18:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:35,777 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-28 09:18:35,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:18:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-28 09:18:35,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:18:35,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:35,779 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] [2020-10-28 09:18:35,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:18:35,780 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-28 09:18:35,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:35,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429383638] [2020-10-28 09:18:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:36,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:18:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:18:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-28 09:18:36,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:36,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:18:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:18:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:18:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 09:18:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:36,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 09:18:36,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:36,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:36,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:36,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 09:18:36,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:36,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:18:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:18:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:18:36,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429383638] [2020-10-28 09:18:36,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:36,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:18:36,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732790355] [2020-10-28 09:18:36,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:18:36,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:36,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:18:36,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:18:36,337 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-28 09:18:36,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:36,600 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-28 09:18:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:18:36,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 09:18:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:36,602 INFO L225 Difference]: With dead ends: 39 [2020-10-28 09:18:36,603 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 09:18:36,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:18:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 09:18:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 09:18:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 09:18:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 09:18:36,626 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-28 09:18:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:36,626 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 09:18:36,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:18:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 09:18:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:18:36,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:36,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:18:36,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:18:36,633 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-28 09:18:36,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:36,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179783763] [2020-10-28 09:18:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:38,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:38,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:18:38,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:18:38,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-28 09:18:38,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:38,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:38,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:18:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:18:38,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 09:18:38,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:38,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:38,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:38,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:38,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:18:38,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:38,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:38,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:18:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:38,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:18:38,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179783763] [2020-10-28 09:18:38,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:18:38,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:18:38,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572851000] [2020-10-28 09:18:38,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:18:38,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:38,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:18:38,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:18:38,758 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-28 09:18:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:39,515 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 09:18:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:18:39,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-28 09:18:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:39,519 INFO L225 Difference]: With dead ends: 52 [2020-10-28 09:18:39,519 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:18:39,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:18:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:18:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-10-28 09:18:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 09:18:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-28 09:18:39,531 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2020-10-28 09:18:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:39,532 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-28 09:18:39,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:18:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-28 09:18:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:18:39,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:39,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:18:39,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:18:39,534 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1995813591, now seen corresponding path program 1 times [2020-10-28 09:18:39,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:39,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368398666] [2020-10-28 09:18:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:39,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:18:39,550 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:18:39,550 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:18:39,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:18:39,575 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:18:39,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:39 BoogieIcfgContainer [2020-10-28 09:18:39,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:18:39,579 INFO L168 Benchmark]: Toolchain (without parser) took 6411.25 ms. Allocated memory was 154.1 MB in the beginning and 192.9 MB in the end (delta: 38.8 MB). Free memory was 130.1 MB in the beginning and 157.0 MB in the end (delta: -26.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:39,580 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 154.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:18:39,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.30 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 119.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:39,582 INFO L168 Benchmark]: Boogie Preprocessor took 63.63 ms. Allocated memory is still 154.1 MB. Free memory was 119.1 MB in the beginning and 117.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:39,583 INFO L168 Benchmark]: RCFGBuilder took 793.06 ms. Allocated memory is still 154.1 MB. Free memory was 117.4 MB in the beginning and 132.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:39,584 INFO L168 Benchmark]: TraceAbstraction took 5242.57 ms. Allocated memory was 154.1 MB in the beginning and 192.9 MB in the end (delta: 38.8 MB). Free memory was 132.1 MB in the beginning and 157.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:39,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 154.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.30 ms. Allocated memory is still 154.1 MB. Free memory was 129.5 MB in the beginning and 119.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.63 ms. Allocated memory is still 154.1 MB. Free memory was 119.1 MB in the beginning and 117.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 793.06 ms. Allocated memory is still 154.1 MB. Free memory was 117.4 MB in the beginning and 132.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5242.57 ms. Allocated memory was 154.1 MB in the beginning and 192.9 MB in the end (delta: 38.8 MB). Free memory was 132.1 MB in the beginning and 157.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i