/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/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:43,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:43,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:43,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:43,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:43,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:43,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:43,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:43,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:43,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:43,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:43,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:43,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:43,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:43,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:43,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:43,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:43,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:43,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:43,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:43,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:43,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:43,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:43,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:43,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:43,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:43,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:43,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:43,348 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 [2020-10-23 18:42:43,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:43,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:43,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:43,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:43,414 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:43,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:43,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:43,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:43,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:43,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:43,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:43,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:43,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:43,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:43,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:43,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:43,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:43,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:43,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:43,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:43,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:43,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:43,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:43,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:43,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:43,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:43,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:43,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:43,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:43,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:43,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:43,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:43,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:43,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:43,851 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:43,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-10-23 18:42:43,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffca99321/cc91acfbec554993b5227f173bd596b9/FLAGc93fec750 [2020-10-23 18:42:44,580 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:44,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c [2020-10-23 18:42:44,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffca99321/cc91acfbec554993b5227f173bd596b9/FLAGc93fec750 [2020-10-23 18:42:44,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffca99321/cc91acfbec554993b5227f173bd596b9 [2020-10-23 18:42:44,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:44,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:44,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:44,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:44,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:44,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:44" (1/1) ... [2020-10-23 18:42:44,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecc1e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:44, skipping insertion in model container [2020-10-23 18:42:44,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:44" (1/1) ... [2020-10-23 18:42:44,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:44,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:45,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:45,190 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:45,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:45,240 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:45,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45 WrapperNode [2020-10-23 18:42:45,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:45,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:45,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:45,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:45,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (1/1) ... [2020-10-23 18:42:45,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:45,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:45,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:45,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:45,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (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 18:42:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:45,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:45,904 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:45,905 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 18:42:45,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:45 BoogieIcfgContainer [2020-10-23 18:42:45,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:45,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:45,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:45,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:45,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:44" (1/3) ... [2020-10-23 18:42:45,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dba671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:45, skipping insertion in model container [2020-10-23 18:42:45,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:45" (2/3) ... [2020-10-23 18:42:45,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dba671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:45, skipping insertion in model container [2020-10-23 18:42:45,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:45" (3/3) ... [2020-10-23 18:42:45,924 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-10-23 18:42:45,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:45,974 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:45,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:46,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:46,033 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:46,033 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:46,033 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:46,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:46,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:46,034 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:46,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-23 18:42:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:42:46,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:46,077 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] [2020-10-23 18:42:46,077 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:46,090 INFO L82 PathProgramCache]: Analyzing trace with hash -462952442, now seen corresponding path program 1 times [2020-10-23 18:42:46,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:46,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137163116] [2020-10-23 18:42:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:46,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:46,559 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 18:42:46,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137163116] [2020-10-23 18:42:46,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:46,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:46,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345602472] [2020-10-23 18:42:46,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:46,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:46,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:46,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:46,592 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-23 18:42:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:46,733 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-10-23 18:42:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:46,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-23 18:42:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:46,744 INFO L225 Difference]: With dead ends: 75 [2020-10-23 18:42:46,744 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 18:42:46,748 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 [2020-10-23 18:42:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 18:42:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-23 18:42:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:42:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-23 18:42:46,796 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 28 [2020-10-23 18:42:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:46,797 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-23 18:42:46,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-23 18:42:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:42:46,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:46,798 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] [2020-10-23 18:42:46,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:46,799 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1113016322, now seen corresponding path program 1 times [2020-10-23 18:42:46,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:46,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436689094] [2020-10-23 18:42:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:46,848 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:46,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906489097] [2020-10-23 18:42:46,849 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 [2020-10-23 18:42:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:46,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:42:46,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:42:47,000 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 18:42:47,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436689094] [2020-10-23 18:42:47,001 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:42:47,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906489097] [2020-10-23 18:42:47,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:47,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:42:47,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090890358] [2020-10-23 18:42:47,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:42:47,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:42:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:47,005 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-23 18:42:47,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:47,105 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-23 18:42:47,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:42:47,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-23 18:42:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:47,108 INFO L225 Difference]: With dead ends: 63 [2020-10-23 18:42:47,108 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 18:42:47,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:42:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 18:42:47,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-23 18:42:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 18:42:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-23 18:42:47,121 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2020-10-23 18:42:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:47,121 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-23 18:42:47,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:42:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-23 18:42:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 18:42:47,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:47,123 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] [2020-10-23 18:42:47,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:42:47,338 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:47,340 INFO L82 PathProgramCache]: Analyzing trace with hash 849595736, now seen corresponding path program 1 times [2020-10-23 18:42:47,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:47,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479105563] [2020-10-23 18:42:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:47,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:47,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199328438] [2020-10-23 18:42:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:47,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:47,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:47,535 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:47,535 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:47,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:47,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:47 BoogieIcfgContainer [2020-10-23 18:42:47,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:47,807 INFO L168 Benchmark]: Toolchain (without parser) took 2849.12 ms. Allocated memory is still 156.2 MB. Free memory was 130.9 MB in the beginning and 55.4 MB in the end (delta: 75.5 MB). Peak memory consumption was 76.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:47,807 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:47,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.60 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 120.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:47,809 INFO L168 Benchmark]: Boogie Preprocessor took 75.91 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 118.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:47,810 INFO L168 Benchmark]: RCFGBuilder took 589.13 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 99.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:47,811 INFO L168 Benchmark]: TraceAbstraction took 1890.59 ms. Allocated memory is still 156.2 MB. Free memory was 99.4 MB in the beginning and 55.4 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:47,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.60 ms. Allocated memory is still 156.2 MB. Free memory was 130.2 MB in the beginning and 120.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.91 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 118.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 589.13 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 99.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1890.59 ms. Allocated memory is still 156.2 MB. Free memory was 99.4 MB in the beginning and 55.4 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.9 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; VAL [\old(N)=10, 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 sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={4:0}] [L32] COND TRUE i