/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:29,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:29,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:29,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:29,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:29,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:29,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:29,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:29,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:29,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:29,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:29,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:29,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:29,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:29,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:29,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:29,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:29,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:29,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:29,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:29,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:29,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:29,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:29,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:29,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:29,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:29,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:29,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:29,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:51:29,285 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:29,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:29,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:29,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:29,287 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:29,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:29,287 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:29,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:29,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:29,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:29,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:29,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:29,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:29,289 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:29,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:29,289 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:29,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:29,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:29,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:29,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:29,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:29,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:29,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:29,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:29,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:29,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:29,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:29,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:29,292 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:29,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:29,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:29,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:29,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:29,669 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:29,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2021-02-23 13:51:29,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3321e2d4e/8f779e4e74c9487a94018da6b2290e7d/FLAG80fd5916b [2021-02-23 13:51:30,440 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:30,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2021-02-23 13:51:30,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3321e2d4e/8f779e4e74c9487a94018da6b2290e7d/FLAG80fd5916b [2021-02-23 13:51:30,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3321e2d4e/8f779e4e74c9487a94018da6b2290e7d [2021-02-23 13:51:30,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:30,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:30,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:30,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:30,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:30,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1448bddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:30, skipping insertion in model container [2021-02-23 13:51:30,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:30" (1/1) ... [2021-02-23 13:51:30,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:30,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:30,996 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/condnf.c[589,602] [2021-02-23 13:51:31,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:31,024 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:31,039 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/condnf.c[589,602] [2021-02-23 13:51:31,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:31,064 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:31,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31 WrapperNode [2021-02-23 13:51:31,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:31,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:31,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:31,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:31,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (1/1) ... [2021-02-23 13:51:31,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:31,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:31,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:31,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:31,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (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 [2021-02-23 13:51:31,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:31,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:31,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:31,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:31,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:31,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:31,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:31,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:31,668 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 13:51:31,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:31 BoogieIcfgContainer [2021-02-23 13:51:31,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:31,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:31,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:31,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:31,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:30" (1/3) ... [2021-02-23 13:51:31,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11949a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:31, skipping insertion in model container [2021-02-23 13:51:31,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:31" (2/3) ... [2021-02-23 13:51:31,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11949a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:31, skipping insertion in model container [2021-02-23 13:51:31,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:31" (3/3) ... [2021-02-23 13:51:31,678 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-02-23 13:51:31,685 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:31,690 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:31,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:31,814 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:31,814 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:31,815 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:31,815 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:31,815 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:31,815 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:31,815 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:31,815 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-23 13:51:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:51:31,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:31,852 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] [2021-02-23 13:51:31,853 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash -9733170, now seen corresponding path program 1 times [2021-02-23 13:51:31,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:31,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478972203] [2021-02-23 13:51:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,317 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-23 13:51:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:32,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478972203] [2021-02-23 13:51:32,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:32,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:32,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029131393] [2021-02-23 13:51:32,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:32,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:32,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:32,417 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-23 13:51:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:32,584 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-23 13:51:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:32,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 13:51:32,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:32,594 INFO L225 Difference]: With dead ends: 60 [2021-02-23 13:51:32,595 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 13:51:32,598 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 [2021-02-23 13:51:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 13:51:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-23 13:51:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 13:51:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-23 13:51:32,641 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2021-02-23 13:51:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:32,641 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-23 13:51:32,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-23 13:51:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:51:32,643 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:32,643 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] [2021-02-23 13:51:32,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:32,644 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -596539184, now seen corresponding path program 1 times [2021-02-23 13:51:32,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:32,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426678389] [2021-02-23 13:51:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:32,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:32,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:32,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:32,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426678389] [2021-02-23 13:51:32,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:32,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:32,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393050736] [2021-02-23 13:51:32,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:32,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:32,808 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2021-02-23 13:51:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:33,069 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-02-23 13:51:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:33,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-02-23 13:51:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:33,073 INFO L225 Difference]: With dead ends: 54 [2021-02-23 13:51:33,073 INFO L226 Difference]: Without dead ends: 39 [2021-02-23 13:51:33,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:51:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-23 13:51:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-02-23 13:51:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 13:51:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-23 13:51:33,097 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2021-02-23 13:51:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:33,100 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-23 13:51:33,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-23 13:51:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:51:33,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:33,103 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] [2021-02-23 13:51:33,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:33,103 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:33,104 INFO L82 PathProgramCache]: Analyzing trace with hash 2074913930, now seen corresponding path program 1 times [2021-02-23 13:51:33,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:33,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122866917] [2021-02-23 13:51:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:33,211 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:33,276 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:33,308 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:33,309 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:33,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:33,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:33 BoogieIcfgContainer [2021-02-23 13:51:33,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:33,351 INFO L168 Benchmark]: Toolchain (without parser) took 2555.10 ms. Allocated memory is still 153.1 MB. Free memory was 129.1 MB in the beginning and 63.2 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:33,351 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:33,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.78 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:33,353 INFO L168 Benchmark]: Boogie Preprocessor took 52.87 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:33,354 INFO L168 Benchmark]: RCFGBuilder took 549.86 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 100.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:33,355 INFO L168 Benchmark]: TraceAbstraction took 1678.30 ms. Allocated memory is still 153.1 MB. Free memory was 99.7 MB in the beginning and 63.2 MB in the end (delta: 36.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:33,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.78 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.87 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.86 ms. Allocated memory is still 153.1 MB. Free memory was 116.5 MB in the beginning and 100.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1678.30 ms. Allocated memory is still 153.1 MB. Free memory was 99.7 MB in the beginning and 63.2 MB in the end (delta: 36.6 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] int *a = malloc(sizeof(int)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND FALSE !(i