/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/s32if.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:17:55,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:17:55,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:17:55,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:17:55,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:17:55,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:17:55,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:17:55,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:17:55,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:17:55,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:17:55,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:17:55,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:17:55,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:17:55,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:17:55,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:17:55,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:17:55,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:17:55,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:17:55,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:17:55,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:17:55,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:17:55,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:17:55,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:17:55,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:17:55,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:17:55,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:17:55,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:17:55,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:17:55,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:17:55,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:17:55,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:17:55,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:17:55,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:17:55,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:17:55,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:17:55,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:17:55,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:17:55,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:17:55,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:17:55,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:17:55,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:17:55,695 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 09:17:55,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:17:55,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:17:55,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:17:55,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:17:55,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:17:55,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:17:55,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:17:55,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:17:55,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:17:55,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:17:55,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:17:55,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:17:55,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:17:55,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:17:55,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:17:55,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:17:55,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:17:55,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:17:55,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:17:55,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:17:55,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:17:55,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:17:55,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:17:55,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:17:55,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:17:55,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:17:55,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:17:55,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:17:55,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:17:55,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:17:56,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:17:56,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:17:56,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:17:56,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:17:56,234 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:17:56,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32if.c [2020-10-28 09:17:56,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df21ca402/2ce44b618d2e42bab4def981305ca36a/FLAGb129d0c8e [2020-10-28 09:17:57,009 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:17:57,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s32if.c [2020-10-28 09:17:57,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df21ca402/2ce44b618d2e42bab4def981305ca36a/FLAGb129d0c8e [2020-10-28 09:17:57,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df21ca402/2ce44b618d2e42bab4def981305ca36a [2020-10-28 09:17:57,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:17:57,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:17:57,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:17:57,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:17:57,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:17:57,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a624960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57, skipping insertion in model container [2020-10-28 09:17:57,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:17:57,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:17:57,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:17:57,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:17:57,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:17:57,677 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:17:57,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57 WrapperNode [2020-10-28 09:17:57,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:17:57,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:17:57,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:17:57,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:17:57,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (1/1) ... [2020-10-28 09:17:57,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:17:57,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:17:57,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:17:57,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:17:57,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (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 09:17:57,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:17:57,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:17:57,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:17:57,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:17:57,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:17:57,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:17:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:17:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:17:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:17:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:17:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:17:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:17:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:17:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:17:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:17:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:17:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:17:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:17:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:17:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:17:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:17:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:17:58,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:17:58,194 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:17:58,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:58 BoogieIcfgContainer [2020-10-28 09:17:58,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:17:58,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:17:58,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:17:58,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:17:58,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:17:57" (1/3) ... [2020-10-28 09:17:58,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8c90e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:17:58, skipping insertion in model container [2020-10-28 09:17:58,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:17:57" (2/3) ... [2020-10-28 09:17:58,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8c90e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:17:58, skipping insertion in model container [2020-10-28 09:17:58,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:17:58" (3/3) ... [2020-10-28 09:17:58,207 INFO L111 eAbstractionObserver]: Analyzing ICFG s32if.c [2020-10-28 09:17:58,242 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:17:58,248 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:17:58,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:17:58,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:17:58,302 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:17:58,303 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:17:58,303 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:17:58,303 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:17:58,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:17:58,304 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:17:58,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:17:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-28 09:17:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:17:58,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:17:58,373 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] [2020-10-28 09:17:58,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:17:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:17:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-28 09:17:58,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:17:58,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557240397] [2020-10-28 09:17:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:17:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:17:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:59,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:17:59,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:17:59,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:17:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-28 09:17:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:17:59,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:17:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:17:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:17:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:17:59,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:17:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:17:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:17:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:17:59,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:17:59,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:17:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 09:17:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:17:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:17:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:17:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:17:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:17:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:17:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:17:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:17:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:17:59,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:17:59,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:17:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:17:59,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:17:59,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:17:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:17:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:17:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:17:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:17:59,430 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 09:17:59,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557240397] [2020-10-28 09:17:59,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:17:59,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:17:59,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986975344] [2020-10-28 09:17:59,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:17:59,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:17:59,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:17:59,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:17:59,468 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-28 09:17:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:17:59,629 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-28 09:17:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:17:59,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-28 09:17:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:17:59,642 INFO L225 Difference]: With dead ends: 67 [2020-10-28 09:17:59,642 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 09:17:59,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 09:17:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 09:17:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-28 09:17:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:17:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-28 09:17:59,719 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-28 09:17:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:17:59,720 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-28 09:17:59,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:17:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-28 09:17:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:17:59,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:17:59,722 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] [2020-10-28 09:17:59,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:17:59,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:17:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:17:59,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1952199574, now seen corresponding path program 1 times [2020-10-28 09:17:59,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:17:59,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985788953] [2020-10-28 09:17:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:17:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:17:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:17:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:00,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:00,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:18:00,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:18:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-28 09:18:00,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:00,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:18:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:18:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:18:00,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:18:00,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:00,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:00,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:00,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:00,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:18:00,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:00,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:18:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:00,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:18:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:00,492 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 09:18:00,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985788953] [2020-10-28 09:18:00,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:18:00,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:18:00,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419927208] [2020-10-28 09:18:00,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:18:00,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:00,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:18:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:18:00,501 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-28 09:18:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:00,671 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-28 09:18:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:18:00,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-28 09:18:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:00,673 INFO L225 Difference]: With dead ends: 48 [2020-10-28 09:18:00,673 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:18:00,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:18:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:18:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 09:18:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:18:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-28 09:18:00,684 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-28 09:18:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:00,685 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-28 09:18:00,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:18:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-28 09:18:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:18:00,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:00,686 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] [2020-10-28 09:18:00,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:18:00,687 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:00,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:00,687 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-28 09:18:00,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:00,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379891369] [2020-10-28 09:18:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:01,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:05,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:18:05,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:18:05,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:18:05,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:05,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:18:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 09:18:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:18:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:18:06,051 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-28 09:18:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:18:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:06,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:06,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:18:06,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:06,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:18:06,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:06,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:06,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:06,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:18:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:18:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:18:06,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:18:06,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:18:06,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:18:06,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:18:06,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:18:06,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:18:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:18:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:18:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:18:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:18:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:18:06,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379891369] [2020-10-28 09:18:06,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:18:06,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:18:06,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092998842] [2020-10-28 09:18:06,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:18:06,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:18:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:18:06,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:18:06,448 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 14 states. [2020-10-28 09:18:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:18:07,214 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-10-28 09:18:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:18:07,215 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-28 09:18:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:18:07,219 INFO L225 Difference]: With dead ends: 58 [2020-10-28 09:18:07,219 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 09:18:07,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:18:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 09:18:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-10-28 09:18:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 09:18:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-28 09:18:07,232 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 32 [2020-10-28 09:18:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:18:07,233 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-28 09:18:07,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:18:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-28 09:18:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:18:07,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:18:07,234 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] [2020-10-28 09:18:07,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:18:07,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:18:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:18:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash -176938115, now seen corresponding path program 1 times [2020-10-28 09:18:07,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:18:07,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263485347] [2020-10-28 09:18:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:18:07,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:18:07,250 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:18:07,250 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:18:07,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:18:07,273 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:18:07,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:18:07 BoogieIcfgContainer [2020-10-28 09:18:07,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:18:07,276 INFO L168 Benchmark]: Toolchain (without parser) took 9896.69 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 126.0 MB in the beginning and 127.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 111.2 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:07,277 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:18:07,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:07,278 INFO L168 Benchmark]: Boogie Preprocessor took 46.66 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:07,279 INFO L168 Benchmark]: RCFGBuilder took 469.82 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 96.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:07,280 INFO L168 Benchmark]: TraceAbstraction took 9075.22 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 95.9 MB in the beginning and 127.2 MB in the end (delta: -31.3 MB). Peak memory consumption was 80.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:18:07,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.96 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.66 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 469.82 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 96.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9075.22 ms. Allocated memory was 151.0 MB in the beginning and 262.1 MB in the end (delta: 111.1 MB). Free memory was 95.9 MB in the beginning and 127.2 MB in the end (delta: -31.3 MB). Peak memory consumption was 80.8 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