/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/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:47,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:47,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:48,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:48,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:48,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:48,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:48,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:48,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:48,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:48,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:48,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:48,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:48,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:48,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:48,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:48,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:48,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:48,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:48,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:48,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:48,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:48,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:48,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:48,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:48,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:48,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:48,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:48,132 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 [2020-11-06 22:44:48,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:48,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:48,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:48,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:48,161 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:48,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:48,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:48,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:48,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:48,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:48,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:48,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:48,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:48,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:48,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:48,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:48,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:48,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:48,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:48,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:48,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:48,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:48,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:48,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:48,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:48,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:48,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:48,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:48,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:48,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:48,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:48,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:48,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:48,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:48,557 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:48,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-11-06 22:44:48,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36cea3cd/f13db117731f448b9b19ea4ebbd31d42/FLAGd508e4b18 [2020-11-06 22:44:49,293 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:49,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss1f.c [2020-11-06 22:44:49,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36cea3cd/f13db117731f448b9b19ea4ebbd31d42/FLAGd508e4b18 [2020-11-06 22:44:49,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b36cea3cd/f13db117731f448b9b19ea4ebbd31d42 [2020-11-06 22:44:49,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:49,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:49,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:49,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:49,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:49,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c05315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49, skipping insertion in model container [2020-11-06 22:44:49,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:49,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:49,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:49,892 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:49,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:49,936 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:49,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49 WrapperNode [2020-11-06 22:44:49,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:49,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:49,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:49,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:49,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (1/1) ... [2020-11-06 22:44:49,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:49,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:49,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:49,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:49,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (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 [2020-11-06 22:44:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:50,541 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:50,541 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-06 22:44:50,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:50 BoogieIcfgContainer [2020-11-06 22:44:50,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:50,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:50,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:50,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:50,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:49" (1/3) ... [2020-11-06 22:44:50,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437009cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:50, skipping insertion in model container [2020-11-06 22:44:50,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:49" (2/3) ... [2020-11-06 22:44:50,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437009cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:50, skipping insertion in model container [2020-11-06 22:44:50,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:50" (3/3) ... [2020-11-06 22:44:50,553 INFO L111 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-11-06 22:44:50,601 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:50,605 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:50,618 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:50,649 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:50,649 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:50,649 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:50,649 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:50,649 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:50,650 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:50,650 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:50,650 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-06 22:44:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 22:44:50,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:50,675 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] [2020-11-06 22:44:50,675 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash -181434534, now seen corresponding path program 1 times [2020-11-06 22:44:50,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:50,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129906098] [2020-11-06 22:44:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:51,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129906098] [2020-11-06 22:44:51,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:51,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:51,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537181582] [2020-11-06 22:44:51,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:51,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:51,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:51,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:51,090 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-06 22:44:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:51,249 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-11-06 22:44:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:51,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-06 22:44:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:51,259 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:44:51,259 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:44:51,263 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 [2020-11-06 22:44:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:44:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-06 22:44:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:44:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-06 22:44:51,303 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2020-11-06 22:44:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:51,304 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-06 22:44:51,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-06 22:44:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 22:44:51,305 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:51,305 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] [2020-11-06 22:44:51,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:51,306 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:51,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1769782436, now seen corresponding path program 1 times [2020-11-06 22:44:51,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:51,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887310186] [2020-11-06 22:44:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:51,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:51,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675722756] [2020-11-06 22:44:51,338 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 [2020-11-06 22:44:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:51,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-06 22:44:51,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:51,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887310186] [2020-11-06 22:44:51,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:51,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675722756] [2020-11-06 22:44:51,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:51,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:44:51,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225848317] [2020-11-06 22:44:51,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:44:51,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:51,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:44:51,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:51,610 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-11-06 22:44:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:51,697 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-11-06 22:44:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:44:51,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-06 22:44:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:51,700 INFO L225 Difference]: With dead ends: 55 [2020-11-06 22:44:51,700 INFO L226 Difference]: Without dead ends: 39 [2020-11-06 22:44:51,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-06 22:44:51,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-11-06 22:44:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-06 22:44:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-06 22:44:51,714 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2020-11-06 22:44:51,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:51,714 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-06 22:44:51,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:44:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-06 22:44:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-06 22:44:51,716 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:51,716 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] [2020-11-06 22:44:51,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:44:51,931 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:51,933 INFO L82 PathProgramCache]: Analyzing trace with hash -697842092, now seen corresponding path program 1 times [2020-11-06 22:44:51,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:51,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648934337] [2020-11-06 22:44:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:51,993 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:51,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852416430] [2020-11-06 22:44:51,994 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 [2020-11-06 22:44:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:52,086 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:52,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:52,154 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:52,154 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:52,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:52,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:52 BoogieIcfgContainer [2020-11-06 22:44:52,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:52,441 INFO L168 Benchmark]: Toolchain (without parser) took 2776.37 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 126.8 MB in the beginning and 177.1 MB in the end (delta: -50.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:52,442 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:52,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:52,444 INFO L168 Benchmark]: Boogie Preprocessor took 47.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:52,445 INFO L168 Benchmark]: RCFGBuilder took 556.65 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 96.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:52,447 INFO L168 Benchmark]: TraceAbstraction took 1893.32 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 96.1 MB in the beginning and 177.1 MB in the end (delta: -81.0 MB). Peak memory consumption was 43.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:52,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 115.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 556.65 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 96.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1893.32 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 96.1 MB in the beginning and 177.1 MB in the end (delta: -81.0 MB). Peak memory consumption was 43.5 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={3:0}] [L32] COND TRUE i