/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/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:38,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:38,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:38,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:38,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:38,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:38,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:38,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:38,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:38,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:38,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:38,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:38,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:38,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:38,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:38,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:38,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:38,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:38,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:38,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:38,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:38,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:38,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:38,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:38,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:38,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:38,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:38,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:38,320 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 13:51:38,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:38,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:38,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:38,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:38,381 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:38,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:38,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:38,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:38,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:38,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:38,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:38,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:38,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:38,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:38,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:38,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:38,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:38,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:38,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:38,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:38,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:38,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:38,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:38,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:38,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:38,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:38,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:38,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:38,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:38,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:38,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:38,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:38,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:38,881 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:38,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2021-02-23 13:51:38,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79eeb064b/7f6c76b4837d4d8dbb040e431d5d5a14/FLAGb3616238e [2021-02-23 13:51:39,644 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:39,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c [2021-02-23 13:51:39,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79eeb064b/7f6c76b4837d4d8dbb040e431d5d5a14/FLAGb3616238e [2021-02-23 13:51:39,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79eeb064b/7f6c76b4837d4d8dbb040e431d5d5a14 [2021-02-23 13:51:39,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:39,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:39,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:39,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:40,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:40,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:39" (1/1) ... [2021-02-23 13:51:40,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c264fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40, skipping insertion in model container [2021-02-23 13:51:40,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:39" (1/1) ... [2021-02-23 13:51:40,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:40,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:40,185 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/indp1f.c[589,602] [2021-02-23 13:51:40,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:40,216 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:40,231 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/indp1f.c[589,602] [2021-02-23 13:51:40,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:40,257 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:40,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40 WrapperNode [2021-02-23 13:51:40,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:40,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:40,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:40,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:40,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (1/1) ... [2021-02-23 13:51:40,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:40,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:40,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:40,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:40,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (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 13:51:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:40,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:41,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:41,059 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 13:51:41,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:41 BoogieIcfgContainer [2021-02-23 13:51:41,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:41,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:41,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:41,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:41,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:39" (1/3) ... [2021-02-23 13:51:41,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2ddc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:41, skipping insertion in model container [2021-02-23 13:51:41,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:40" (2/3) ... [2021-02-23 13:51:41,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2ddc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:41, skipping insertion in model container [2021-02-23 13:51:41,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:41" (3/3) ... [2021-02-23 13:51:41,071 INFO L111 eAbstractionObserver]: Analyzing ICFG indp1f.c [2021-02-23 13:51:41,079 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:41,085 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:41,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:41,142 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:41,142 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:41,142 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:41,142 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:41,142 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:41,143 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:41,143 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:41,143 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-23 13:51:41,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 13:51:41,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:41,173 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] [2021-02-23 13:51:41,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 730907677, now seen corresponding path program 1 times [2021-02-23 13:51:41,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:41,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218864705] [2021-02-23 13:51:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:41,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:41,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:41,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:41,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:41,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:41,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:41,552 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 13:51:41,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218864705] [2021-02-23 13:51:41,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:41,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:41,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303403974] [2021-02-23 13:51:41,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:41,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:41,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:41,582 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-23 13:51:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:41,809 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-23 13:51:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:41,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-23 13:51:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:41,821 INFO L225 Difference]: With dead ends: 64 [2021-02-23 13:51:41,821 INFO L226 Difference]: Without dead ends: 32 [2021-02-23 13:51:41,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-23 13:51:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-23 13:51:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 13:51:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-23 13:51:41,870 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2021-02-23 13:51:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:41,871 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-23 13:51:41,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-23 13:51:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 13:51:41,872 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:41,872 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] [2021-02-23 13:51:41,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:41,873 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:41,875 INFO L82 PathProgramCache]: Analyzing trace with hash -548956001, now seen corresponding path program 1 times [2021-02-23 13:51:41,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:41,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498722741] [2021-02-23 13:51:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:41,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:41,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:41,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:41,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:41,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:42,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:42,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:42,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:42,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:42,101 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 13:51:42,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498722741] [2021-02-23 13:51:42,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:42,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:42,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979184676] [2021-02-23 13:51:42,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:42,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:42,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:42,106 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2021-02-23 13:51:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:42,352 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-02-23 13:51:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:42,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-02-23 13:51:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:42,357 INFO L225 Difference]: With dead ends: 59 [2021-02-23 13:51:42,357 INFO L226 Difference]: Without dead ends: 42 [2021-02-23 13:51:42,358 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 13:51:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-23 13:51:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2021-02-23 13:51:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-23 13:51:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-02-23 13:51:42,374 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2021-02-23 13:51:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:42,375 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-02-23 13:51:42,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-02-23 13:51:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:51:42,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:42,376 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] [2021-02-23 13:51:42,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:42,377 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1885615975, now seen corresponding path program 1 times [2021-02-23 13:51:42,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:42,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298048994] [2021-02-23 13:51:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:42,398 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 13:51:42,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240804332] [2021-02-23 13:51:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:51:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:42,515 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:42,571 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:42,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:42,638 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:42,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 13:51:42,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:42 BoogieIcfgContainer [2021-02-23 13:51:42,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:42,897 INFO L168 Benchmark]: Toolchain (without parser) took 2912.23 ms. Allocated memory was 153.1 MB in the beginning and 194.0 MB in the end (delta: 40.9 MB). Free memory was 127.6 MB in the beginning and 169.2 MB in the end (delta: -41.5 MB). Peak memory consumption was 80.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:42,898 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:42,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.01 ms. Allocated memory is still 153.1 MB. Free memory was 126.4 MB in the beginning and 116.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:42,899 INFO L168 Benchmark]: Boogie Preprocessor took 44.82 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:42,900 INFO L168 Benchmark]: RCFGBuilder took 756.22 ms. Allocated memory is still 153.1 MB. Free memory was 114.4 MB in the beginning and 131.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:42,901 INFO L168 Benchmark]: TraceAbstraction took 1832.27 ms. Allocated memory was 153.1 MB in the beginning and 194.0 MB in the end (delta: 40.9 MB). Free memory was 131.0 MB in the beginning and 169.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 84.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:42,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.01 ms. Allocated memory is still 153.1 MB. Free memory was 126.4 MB in the beginning and 116.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.82 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 756.22 ms. Allocated memory is still 153.1 MB. Free memory was 114.4 MB in the beginning and 131.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1832.27 ms. Allocated memory was 153.1 MB in the beginning and 194.0 MB in the end (delta: 40.9 MB). Free memory was 131.0 MB in the beginning and 169.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 84.0 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)=17, 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] long long *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L30] COND TRUE i