/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/nla-digbench/hard2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:19:57,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:19:57,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:19:57,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:19:57,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:19:57,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:19:57,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:19:57,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:19:57,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:19:57,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:19:57,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:19:57,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:19:57,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:19:57,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:19:57,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:19:57,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:19:57,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:19:57,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:19:57,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:19:57,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:19:57,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:19:58,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:19:58,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:19:58,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:19:58,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:19:58,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:19:58,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:19:58,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:19:58,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:19:58,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:19:58,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:19:58,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:19:58,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:19:58,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:19:58,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:19:58,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:19:58,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:19:58,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:19:58,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:19:58,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:19:58,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:19:58,032 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 15:19:58,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:19:58,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:19:58,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:19:58,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:19:58,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:19:58,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:19:58,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:19:58,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:19:58,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:19:58,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:19:58,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:19:58,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:19:58,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:19:58,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:19:58,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:19:58,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:19:58,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:19:58,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:19:58,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:19:58,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:19:58,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:19:58,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:19:58,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:19:58,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:19:58,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:19:58,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:19:58,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:19:58,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:19:58,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:19:58,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:19:58,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:19:58,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:19:58,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:19:58,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:19:58,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:19:58,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/hard2.c [2020-10-28 15:19:58,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4286872/16be93cfef68438fac758968489eaa01/FLAGd4035bbc4 [2020-10-28 15:19:59,289 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:19:59,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/hard2.c [2020-10-28 15:19:59,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4286872/16be93cfef68438fac758968489eaa01/FLAGd4035bbc4 [2020-10-28 15:19:59,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4286872/16be93cfef68438fac758968489eaa01 [2020-10-28 15:19:59,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:19:59,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:19:59,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:19:59,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:19:59,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:19:59,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:19:59" (1/1) ... [2020-10-28 15:19:59,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8407dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:59, skipping insertion in model container [2020-10-28 15:19:59,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:19:59" (1/1) ... [2020-10-28 15:19:59,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:19:59,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:20:00,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:20:00,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:20:00,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:20:00,073 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:20:00,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00 WrapperNode [2020-10-28 15:20:00,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:20:00,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:20:00,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:20:00,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:20:00,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (1/1) ... [2020-10-28 15:20:00,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:20:00,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:20:00,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:20:00,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:20:00,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (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 15:20:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:20:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:20:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:20:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:20:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:20:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:20:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:20:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:20:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:20:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:20:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:20:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:20:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:20:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:20:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:20:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:20:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:20:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:20:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:20:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:20:00,564 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:20:00,564 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 15:20:00,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:20:00 BoogieIcfgContainer [2020-10-28 15:20:00,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:20:00,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:20:00,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:20:00,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:20:00,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:19:59" (1/3) ... [2020-10-28 15:20:00,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cc8063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:20:00, skipping insertion in model container [2020-10-28 15:20:00,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:20:00" (2/3) ... [2020-10-28 15:20:00,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cc8063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:20:00, skipping insertion in model container [2020-10-28 15:20:00,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:20:00" (3/3) ... [2020-10-28 15:20:00,577 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2.c [2020-10-28 15:20:00,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:20:00,596 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:20:00,611 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:20:00,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:20:00,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:20:00,647 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:20:00,647 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:20:00,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:20:00,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:20:00,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:20:00,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:20:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-28 15:20:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-28 15:20:00,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:20:00,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:20:00,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:20:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:20:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 800999790, now seen corresponding path program 1 times [2020-10-28 15:20:00,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:20:00,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200781496] [2020-10-28 15:20:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:20:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:20:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:20:01,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:20:01,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 15:20:01,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:20:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 15:20:01,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:20:01,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:20:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:20:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:20:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:20:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:20:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:20:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:20:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:20:01,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:20:01,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:20:01,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:20:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 15:20:01,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:20:01,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:20:01,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:20:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:20:01,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:20:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:20:01,476 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 15:20:01,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200781496] [2020-10-28 15:20:01,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:20:01,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:20:01,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661352153] [2020-10-28 15:20:01,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:20:01,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:20:01,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:20:01,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:20:01,517 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-28 15:20:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:20:02,198 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-10-28 15:20:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:20:02,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-28 15:20:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:20:02,209 INFO L225 Difference]: With dead ends: 70 [2020-10-28 15:20:02,210 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 15:20:02,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:20:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 15:20:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2020-10-28 15:20:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-28 15:20:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-10-28 15:20:02,264 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 12 [2020-10-28 15:20:02,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:20:02,265 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-10-28 15:20:02,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:20:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-10-28 15:20:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 15:20:02,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:20:02,266 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:20:02,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:20:02,267 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:20:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:20:02,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2096541858, now seen corresponding path program 1 times [2020-10-28 15:20:02,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:20:02,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331539643] [2020-10-28 15:20:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:20:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:20:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:20:02,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:20:02,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 15:20:02,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:20:02,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 15:20:02,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:20:02,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:20:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:20:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:20:02,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:20:02,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:20:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:20:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:20:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:20:02,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:20:02,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:20:02,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:20:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:20:02,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:20:02,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:20:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:20:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:20:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:20:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:20:02,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:20:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:20:02,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:20:02,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:20:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:20:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:20:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:20:02,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:20:02,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:20:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:20:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:20:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:20:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:20:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:20:02,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331539643] [2020-10-28 15:20:02,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:20:02,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:20:02,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400125024] [2020-10-28 15:20:02,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:20:02,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:20:02,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:20:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:20:02,585 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 6 states. [2020-10-28 15:20:03,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:20:03,097 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-10-28 15:20:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:20:03,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-28 15:20:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:20:03,100 INFO L225 Difference]: With dead ends: 43 [2020-10-28 15:20:03,100 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 15:20:03,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:20:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 15:20:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-28 15:20:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 15:20:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-28 15:20:03,115 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 17 [2020-10-28 15:20:03,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:20:03,116 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-28 15:20:03,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:20:03,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-28 15:20:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:20:03,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:20:03,118 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:20:03,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:20:03,118 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:20:03,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:20:03,119 INFO L82 PathProgramCache]: Analyzing trace with hash -769095122, now seen corresponding path program 1 times [2020-10-28 15:20:03,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:20:03,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282958495] [2020-10-28 15:20:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:20:03,137 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 15:20:03,137 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 15:20:03,137 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 15:20:03,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:20:03,164 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 15:20:03,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:20:03 BoogieIcfgContainer [2020-10-28 15:20:03,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:20:03,172 INFO L168 Benchmark]: Toolchain (without parser) took 3495.25 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 110.0 MB in the beginning and 149.4 MB in the end (delta: -39.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:20:03,173 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:20:03,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.57 ms. Allocated memory is still 155.2 MB. Free memory was 109.5 MB in the beginning and 99.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:20:03,176 INFO L168 Benchmark]: Boogie Preprocessor took 86.63 ms. Allocated memory is still 155.2 MB. Free memory was 99.9 MB in the beginning and 139.0 MB in the end (delta: -39.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-28 15:20:03,177 INFO L168 Benchmark]: RCFGBuilder took 402.87 ms. Allocated memory is still 155.2 MB. Free memory was 139.0 MB in the beginning and 124.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:20:03,179 INFO L168 Benchmark]: TraceAbstraction took 2596.34 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 123.9 MB in the beginning and 149.4 MB in the end (delta: -25.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-10-28 15:20:03,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.57 ms. Allocated memory is still 155.2 MB. Free memory was 109.5 MB in the beginning and 99.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.63 ms. Allocated memory is still 155.2 MB. Free memory was 99.9 MB in the beginning and 139.0 MB in the end (delta: -39.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 402.87 ms. Allocated memory is still 155.2 MB. Free memory was 139.0 MB in the beginning and 124.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2596.34 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 123.9 MB in the beginning and 149.4 MB in the end (delta: -25.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: 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: [L23] int A, B; [L24] int r, d, p, q; [L25] A = __VERIFIER_nondet_int() [L26] B = 1 [L28] r = A [L29] d = B [L30] p = 1 [L31] q = 0 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(q == 0) [L15] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(q == 0) [L35] CALL __VERIFIER_assert(r == A) [L15] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(r == A) [L36] CALL __VERIFIER_assert(d == B * p) [L15] COND TRUE !(cond) [L17] CALL reach_error() [L8] __assert_fail("0", "hard2.c", 8, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 67 SDslu, 69 SDs, 0 SdLazy, 184 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1435 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...