/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:44:48,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:44:48,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:44:49,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:44:49,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:44:49,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:44:49,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:44:49,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:44:49,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:44:49,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:44:49,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:44:49,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:44:49,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:44:49,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:44:49,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:44:49,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:44:49,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:44:49,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:44:49,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:44:49,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:44:49,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:44:49,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:44:49,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:44:49,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:44:49,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:44:49,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:44:49,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:44:49,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:44:49,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:44:49,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:44:49,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:44:49,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:44:49,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:44:49,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:44:49,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:44:49,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:44:49,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:44:49,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:44:49,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:44:49,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:44:49,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:44:49,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:44:49,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:44:49,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:44:49,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:44:49,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:44:49,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:44:49,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:44:49,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:44:49,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:44:49,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:44:49,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:44:49,191 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:44:49,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:44:49,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:44:49,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:44:49,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:44:49,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:44:49,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:44:49,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:44:49,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:44:49,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:44:49,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:44:49,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:44:49,687 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:44:49,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-10-23 21:44:49,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815c35f03/55f56d6a9c7343f6935dbef01c0e37fb/FLAGe576fd133 [2020-10-23 21:44:50,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:44:50,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2020-10-23 21:44:50,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815c35f03/55f56d6a9c7343f6935dbef01c0e37fb/FLAGe576fd133 [2020-10-23 21:44:50,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/815c35f03/55f56d6a9c7343f6935dbef01c0e37fb [2020-10-23 21:44:50,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:44:50,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:44:50,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:50,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:44:50,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:44:50,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:50" (1/1) ... [2020-10-23 21:44:50,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d77c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:50, skipping insertion in model container [2020-10-23 21:44:50,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:50" (1/1) ... [2020-10-23 21:44:50,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:44:50,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:44:51,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:51,085 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:44:51,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:51,126 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:44:51,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51 WrapperNode [2020-10-23 21:44:51,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:51,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:44:51,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:44:51,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:44:51,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:44:51,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:44:51,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:44:51,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:44:51,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (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 [2020-10-23 21:44:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:44:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:44:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:44:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:44:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:44:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:44:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:44:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:44:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:44:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:44:51,822 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:44:51,822 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 21:44:51,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:51 BoogieIcfgContainer [2020-10-23 21:44:51,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:44:51,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:44:51,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:44:51,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:44:51,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:44:50" (1/3) ... [2020-10-23 21:44:51,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0aad7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:51, skipping insertion in model container [2020-10-23 21:44:51,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (2/3) ... [2020-10-23 21:44:51,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0aad7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:51, skipping insertion in model container [2020-10-23 21:44:51,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:51" (3/3) ... [2020-10-23 21:44:51,835 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-10-23 21:44:51,850 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:44:51,856 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:44:51,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:44:51,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:44:51,897 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:44:51,897 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:44:51,897 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:44:51,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:44:51,897 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:44:51,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:44:51,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:44:51,915 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-23 21:44:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 21:44:51,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:51,928 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] [2020-10-23 21:44:51,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1808678520, now seen corresponding path program 1 times [2020-10-23 21:44:51,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:51,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407166613] [2020-10-23 21:44:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:52,037 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:44:52,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407166613] [2020-10-23 21:44:52,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:52,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:44:52,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003771964] [2020-10-23 21:44:52,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:44:52,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:52,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:44:52,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:44:52,305 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-23 21:44:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:52,520 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2020-10-23 21:44:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:44:52,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-23 21:44:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:52,532 INFO L225 Difference]: With dead ends: 111 [2020-10-23 21:44:52,533 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 21:44:52,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:44:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 21:44:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-23 21:44:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 21:44:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-23 21:44:52,593 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 37 [2020-10-23 21:44:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:52,594 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-23 21:44:52,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:44:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-23 21:44:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 21:44:52,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:52,598 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] [2020-10-23 21:44:52,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:44:52,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash 783267996, now seen corresponding path program 1 times [2020-10-23 21:44:52,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:52,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627602909] [2020-10-23 21:44:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:52,614 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:44:52,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627602909] [2020-10-23 21:44:52,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:52,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:44:52,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048290520] [2020-10-23 21:44:52,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:44:52,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:52,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:44:52,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:44:52,857 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 5 states. [2020-10-23 21:44:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:53,156 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-23 21:44:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:44:53,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-23 21:44:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:53,160 INFO L225 Difference]: With dead ends: 105 [2020-10-23 21:44:53,161 INFO L226 Difference]: Without dead ends: 78 [2020-10-23 21:44:53,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:44:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-23 21:44:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2020-10-23 21:44:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-23 21:44:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-23 21:44:53,182 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 37 [2020-10-23 21:44:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:53,182 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-23 21:44:53,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:44:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-23 21:44:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-23 21:44:53,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:53,184 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, 1] [2020-10-23 21:44:53,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:44:53,185 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:53,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:53,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1722760403, now seen corresponding path program 1 times [2020-10-23 21:44:53,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:53,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836902735] [2020-10-23 21:44:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:53,387 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:44:53,390 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:53,445 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:53,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:53,577 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:44:53,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:44:53,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:44:53,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:44:53 BoogieIcfgContainer [2020-10-23 21:44:53,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:44:53,611 INFO L168 Benchmark]: Toolchain (without parser) took 2758.40 ms. Allocated memory is still 153.1 MB. Free memory was 129.4 MB in the beginning and 81.7 MB in the end (delta: 47.7 MB). Peak memory consumption was 48.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,612 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:44:53,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.64 ms. Allocated memory is still 153.1 MB. Free memory was 128.7 MB in the beginning and 118.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,614 INFO L168 Benchmark]: Boogie Preprocessor took 42.27 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,615 INFO L168 Benchmark]: RCFGBuilder took 653.37 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 130.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,616 INFO L168 Benchmark]: TraceAbstraction took 1781.67 ms. Allocated memory is still 153.1 MB. Free memory was 129.8 MB in the beginning and 81.7 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.64 ms. Allocated memory is still 153.1 MB. Free memory was 128.7 MB in the beginning and 118.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.27 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 653.37 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 130.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1781.67 ms. Allocated memory is still 153.1 MB. Free memory was 129.8 MB in the beginning and 81.7 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] int *a = malloc(sizeof(int)*N); [L30] i = 0 [L30] COND TRUE i < N [L32] a[i] = 0 [L30] i++ [L30] COND FALSE !(i < N) [L35] i = 0 [L35] COND TRUE i < N [L37] COND TRUE N%2 == 1 [L39] EXPR a[i] [L39] a[i] = a[i] + 2 [L35] i++ [L35] COND FALSE !(i < N) [L47] i = 0 [L47] COND TRUE i < N [L49] EXPR a[i] [L49] CALL __VERIFIER_assert(a[i] % 2 == N % 2) [L15] COND TRUE !(cond) [L15] CALL reach_error() [L10] __assert_fail("0", "condmf.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 94 SDslu, 28 SDs, 0 SdLazy, 152 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=0, 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 proved your program to be incorrect! Received shutdown request...