/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/indp1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:14:42,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:14:42,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:14:42,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:14:42,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:14:42,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:14:42,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:14:42,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:14:42,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:14:42,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:14:42,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:14:42,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:14:42,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:14:42,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:14:42,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:14:42,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:14:42,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:14:42,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:14:42,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:14:42,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:14:42,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:14:42,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:14:42,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:14:42,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:14:42,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:14:42,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:14:42,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:14:42,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:14:42,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:14:42,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:14:42,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:14:42,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:14:42,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:14:42,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:14:42,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:14:42,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:14:42,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:14:42,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:14:42,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:14:42,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:14:42,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:14:42,400 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 09:14:42,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:14:42,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:14:42,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:14:42,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:14:42,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:14:42,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:14:42,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:14:42,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:14:42,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:14:42,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:14:42,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:14:42,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:14:42,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:14:42,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:14:42,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:14:42,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:14:42,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:14:42,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:14:42,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:14:42,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:14:42,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:14:42,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:14:42,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:14:42,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:14:42,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:14:42,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:14:42,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:14:42,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:14:42,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:14:42,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:14:42,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:14:42,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:14:42,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:14:42,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:14:42,843 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:14:42,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1.c [2020-10-28 09:14:42,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d4c16481/f84a20f2f8cb476294caa1c178090e54/FLAG78f873973 [2020-10-28 09:14:43,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:14:43,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp1.c [2020-10-28 09:14:43,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d4c16481/f84a20f2f8cb476294caa1c178090e54/FLAG78f873973 [2020-10-28 09:14:44,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d4c16481/f84a20f2f8cb476294caa1c178090e54 [2020-10-28 09:14:44,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:14:44,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:14:44,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:14:44,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:14:44,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:14:44,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e66967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44, skipping insertion in model container [2020-10-28 09:14:44,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:14:44,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:14:44,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:14:44,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:14:44,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:14:44,344 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:14:44,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44 WrapperNode [2020-10-28 09:14:44,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:14:44,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:14:44,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:14:44,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:14:44,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (1/1) ... [2020-10-28 09:14:44,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:14:44,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:14:44,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:14:44,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:14:44,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (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 09:14:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:14:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:14:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:14:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:14:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:14:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:14:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:14:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:14:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:14:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:14:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:14:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:14:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:14:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:14:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:14:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:14:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:14:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:14:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:14:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:14:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:14:44,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:14:45,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:14:45,129 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 09:14:45,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:45 BoogieIcfgContainer [2020-10-28 09:14:45,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:14:45,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:14:45,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:14:45,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:14:45,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:14:44" (1/3) ... [2020-10-28 09:14:45,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553424fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:14:45, skipping insertion in model container [2020-10-28 09:14:45,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:44" (2/3) ... [2020-10-28 09:14:45,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553424fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:14:45, skipping insertion in model container [2020-10-28 09:14:45,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:45" (3/3) ... [2020-10-28 09:14:45,146 INFO L111 eAbstractionObserver]: Analyzing ICFG indp1.c [2020-10-28 09:14:45,161 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:14:45,169 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:14:45,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:14:45,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:14:45,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:14:45,230 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:14:45,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:14:45,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:14:45,231 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:14:45,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:14:45,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:14:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-28 09:14:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:14:45,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:14:45,275 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] [2020-10-28 09:14:45,276 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:14:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:14:45,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1041170357, now seen corresponding path program 1 times [2020-10-28 09:14:45,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:14:45,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055777938] [2020-10-28 09:14:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:14:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:14:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:47,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:14:47,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:14:47,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:14:47,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-28 09:14:47,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:14:47,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:14:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:14:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:14:47,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:14:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:14:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:14:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:14:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:47,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:14:47,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:14:47,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:14:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:14:47,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:14:47,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:14:47,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:14:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:14:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:14:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:14:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:14:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:14:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:14:47,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:14:47,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:14:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:14:47,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:14:47,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:14:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:14:47,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:14:47,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:14:47,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:14:47,336 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 09:14:47,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055777938] [2020-10-28 09:14:47,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:14:47,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:14:47,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032787961] [2020-10-28 09:14:47,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:14:47,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:14:47,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:14:47,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:14:47,367 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-28 09:14:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:14:47,568 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-28 09:14:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:14:47,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-28 09:14:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:14:47,579 INFO L225 Difference]: With dead ends: 69 [2020-10-28 09:14:47,579 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:14:47,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:14:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:14:47,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-28 09:14:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 09:14:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-28 09:14:47,630 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2020-10-28 09:14:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:14:47,631 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-28 09:14:47,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:14:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-28 09:14:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:14:47,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:14:47,633 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] [2020-10-28 09:14:47,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:14:47,633 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:14:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:14:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash 20102003, now seen corresponding path program 1 times [2020-10-28 09:14:47,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:14:47,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538120867] [2020-10-28 09:14:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:14:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:14:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:48,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:14:48,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:14:48,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:14:48,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-28 09:14:48,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:14:48,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:14:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:14:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:14:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:14:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:14:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:14:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:14:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:14:48,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:14:48,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:14:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:14:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:14:48,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:14:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:14:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:14:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:14:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:14:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 09:14:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:14:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:14:48,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:14:48,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:14:48,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:14:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:14:48,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:14:48,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:14:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:14:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:14:48,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:14:48,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:14:48,814 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 09:14:48,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538120867] [2020-10-28 09:14:48,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:14:48,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:14:48,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915459164] [2020-10-28 09:14:48,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:14:48,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:14:48,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:14:48,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:14:48,819 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 5 states. [2020-10-28 09:14:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:14:49,149 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-28 09:14:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:14:49,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-28 09:14:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:14:49,152 INFO L225 Difference]: With dead ends: 55 [2020-10-28 09:14:49,152 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 09:14:49,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:14:49,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 09:14:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-28 09:14:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 09:14:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-28 09:14:49,164 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-10-28 09:14:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:14:49,164 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-28 09:14:49,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:14:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-28 09:14:49,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 09:14:49,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:14:49,166 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] [2020-10-28 09:14:49,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:14:49,166 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:14:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:14:49,167 INFO L82 PathProgramCache]: Analyzing trace with hash -968536487, now seen corresponding path program 1 times [2020-10-28 09:14:49,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:14:49,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012768388] [2020-10-28 09:14:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:14:49,182 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-28 09:14:49,183 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-28 09:14:49,183 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 09:14:49,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:14:49,206 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-28 09:14:49,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:14:49 BoogieIcfgContainer [2020-10-28 09:14:49,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:14:49,209 INFO L168 Benchmark]: Toolchain (without parser) took 5142.89 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 127.7 MB in the beginning and 130.2 MB in the end (delta: -2.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. [2020-10-28 09:14:49,210 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 125.8 MB. Free memory is still 100.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:14:49,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.21 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:14:49,212 INFO L168 Benchmark]: Boogie Preprocessor took 43.18 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 115.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:14:49,213 INFO L168 Benchmark]: RCFGBuilder took 742.36 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 130.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2020-10-28 09:14:49,214 INFO L168 Benchmark]: TraceAbstraction took 4070.05 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 130.2 MB in the beginning and 130.2 MB in the end (delta: 30.5 kB). Peak memory consumption was 31.3 MB. Max. memory is 8.0 GB. [2020-10-28 09:14:49,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 125.8 MB. Free memory is still 100.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.21 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 117.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.18 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 115.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 742.36 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 130.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4070.05 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 130.2 MB in the beginning and 130.2 MB in the end (delta: 30.5 kB). Peak memory consumption was 31.3 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] long long i; [L28] long long *a = malloc(sizeof(int)*N); [L30] i=0 [L30] COND TRUE i