/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:27,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:27,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:27,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:16:27,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:27,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:27,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:27,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:27,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:27,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:27,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:27,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:27,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:27,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:27,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:27,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:27,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:16:27,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:27,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:27,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:27,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:27,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:27,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:27,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:27,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:27,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:27,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:27,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:27,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:27,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:27,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:27,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:27,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:27,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:27,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:27,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:27,176 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:27,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:27,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:27,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:27,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:27,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:27,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:27,177 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:27,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:27,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:27,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:27,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:27,610 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:27,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2021-02-24 00:16:27,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b82e277c/b69ee3e5174c44428f4a44e6e8ace040/FLAG28f20fa33 [2021-02-24 00:16:28,416 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:28,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c [2021-02-24 00:16:28,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b82e277c/b69ee3e5174c44428f4a44e6e8ace040/FLAG28f20fa33 [2021-02-24 00:16:28,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b82e277c/b69ee3e5174c44428f4a44e6e8ace040 [2021-02-24 00:16:28,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:28,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:28,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:28,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:28,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:28,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:28" (1/1) ... [2021-02-24 00:16:28,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706e1b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:28, skipping insertion in model container [2021-02-24 00:16:28,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:28" (1/1) ... [2021-02-24 00:16:28,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:28,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:29,004 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c[587,600] [2021-02-24 00:16:29,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:29,036 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:29,051 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c[587,600] [2021-02-24 00:16:29,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:29,080 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:29,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29 WrapperNode [2021-02-24 00:16:29,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:29,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:29,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:29,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:29,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... [2021-02-24 00:16:29,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:29,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:29,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:29,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:29,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-24 00:16:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:29,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:29,671 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 00:16:29,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:29 BoogieIcfgContainer [2021-02-24 00:16:29,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:29,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:29,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:29,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:29,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:28" (1/3) ... [2021-02-24 00:16:29,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d842296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:29, skipping insertion in model container [2021-02-24 00:16:29,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:29" (2/3) ... [2021-02-24 00:16:29,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d842296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:29, skipping insertion in model container [2021-02-24 00:16:29,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:29" (3/3) ... [2021-02-24 00:16:29,683 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2021-02-24 00:16:29,702 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:29,713 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:29,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:29,759 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:29,759 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:29,759 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:29,760 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:29,760 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:29,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:29,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:29,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2021-02-24 00:16:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 00:16:29,793 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:29,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:29,795 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash -82996694, now seen corresponding path program 1 times [2021-02-24 00:16:29,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:29,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429500696] [2021-02-24 00:16:29,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:30,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:30,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-24 00:16:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:30,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:30,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:30,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429500696] [2021-02-24 00:16:30,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:30,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:30,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204510643] [2021-02-24 00:16:30,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:30,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:30,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:30,306 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 3 states. [2021-02-24 00:16:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:30,540 INFO L93 Difference]: Finished difference Result 160 states and 183 transitions. [2021-02-24 00:16:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:30,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2021-02-24 00:16:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:30,552 INFO L225 Difference]: With dead ends: 160 [2021-02-24 00:16:30,552 INFO L226 Difference]: Without dead ends: 82 [2021-02-24 00:16:30,556 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 [2021-02-24 00:16:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-24 00:16:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-24 00:16:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 00:16:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-02-24 00:16:30,619 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 49 [2021-02-24 00:16:30,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:30,620 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-02-24 00:16:30,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-02-24 00:16:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 00:16:30,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:30,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:30,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:30,628 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:30,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1381813203, now seen corresponding path program 1 times [2021-02-24 00:16:30,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:30,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933182717] [2021-02-24 00:16:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:30,700 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:16:30,701 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:16:30,701 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:30,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:30,742 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:16:30,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:30 BoogieIcfgContainer [2021-02-24 00:16:30,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:30,745 INFO L168 Benchmark]: Toolchain (without parser) took 1951.94 ms. Allocated memory is still 155.2 MB. Free memory was 132.0 MB in the beginning and 137.6 MB in the end (delta: -5.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:30,745 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:30,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.31 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 120.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:30,748 INFO L168 Benchmark]: Boogie Preprocessor took 47.08 ms. Allocated memory is still 155.2 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:30,748 INFO L168 Benchmark]: RCFGBuilder took 542.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.9 MB in the beginning and 127.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:30,749 INFO L168 Benchmark]: TraceAbstraction took 1067.65 ms. Allocated memory is still 155.2 MB. Free memory was 127.6 MB in the beginning and 137.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:30,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 155.2 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.31 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 120.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.08 ms. Allocated memory is still 155.2 MB. Free memory was 120.6 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 542.90 ms. Allocated memory is still 155.2 MB. Free memory was 118.9 MB in the beginning and 127.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1067.65 ms. Allocated memory is still 155.2 MB. Free memory was 127.6 MB in the beginning and 137.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND FALSE !(i