/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 0.2.0-7d8eed3 [2020-11-06 22:44:48,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:48,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:48,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:48,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:48,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:48,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:48,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:48,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:48,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:48,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:48,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:48,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:48,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:48,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:48,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:48,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:48,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:48,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:48,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:48,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:48,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:48,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:48,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:48,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:48,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:48,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:48,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:48,957 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 22:44:49,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:49,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:49,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:49,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:49,019 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:49,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:49,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:49,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:49,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:49,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:49,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:49,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:49,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:49,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:49,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:49,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:49,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:49,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:49,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:49,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:49,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:49,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:49,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:49,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:49,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:49,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:49,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:49,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:49,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:49,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:49,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:49,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:49,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:49,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:49,524 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:49,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-11-06 22:44:49,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d72ef639/13b848339d144bb9898a4182680a9f8e/FLAG02bdae587 [2020-11-06 22:44:50,197 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:50,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3f.c [2020-11-06 22:44:50,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d72ef639/13b848339d144bb9898a4182680a9f8e/FLAG02bdae587 [2020-11-06 22:44:50,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d72ef639/13b848339d144bb9898a4182680a9f8e [2020-11-06 22:44:50,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:50,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:50,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:50,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:50,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:50,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:50,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2315e086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50, skipping insertion in model container [2020-11-06 22:44:50,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:50,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:50,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:50,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:50,892 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:50,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:50,982 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:50,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50 WrapperNode [2020-11-06 22:44:50,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:50,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:50,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:50,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:51,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (1/1) ... [2020-11-06 22:44:51,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:51,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:51,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:51,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:51,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (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 22:44:51,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:51,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:51,193 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:51,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:51,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:51,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:51,771 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 22:44:51,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:51 BoogieIcfgContainer [2020-11-06 22:44:51,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:51,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:51,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:51,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:51,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:50" (1/3) ... [2020-11-06 22:44:51,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fea640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:51, skipping insertion in model container [2020-11-06 22:44:51,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:50" (2/3) ... [2020-11-06 22:44:51,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fea640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:51, skipping insertion in model container [2020-11-06 22:44:51,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:51" (3/3) ... [2020-11-06 22:44:51,783 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-11-06 22:44:51,799 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:51,803 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:51,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:51,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:51,848 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:51,848 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:51,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:51,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:51,848 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:51,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:51,849 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-06 22:44:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 22:44:51,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:51,876 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] [2020-11-06 22:44:51,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash -462952442, now seen corresponding path program 1 times [2020-11-06 22:44:51,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:51,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912054983] [2020-11-06 22:44:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:52,227 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 22:44:52,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912054983] [2020-11-06 22:44:52,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:52,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:52,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828910111] [2020-11-06 22:44:52,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:52,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:52,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:52,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:52,254 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-11-06 22:44:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:52,444 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-11-06 22:44:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:52,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-06 22:44:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:52,455 INFO L225 Difference]: With dead ends: 75 [2020-11-06 22:44:52,455 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 22:44:52,460 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 [2020-11-06 22:44:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 22:44:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-06 22:44:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 22:44:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-11-06 22:44:52,518 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 28 [2020-11-06 22:44:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:52,519 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-11-06 22:44:52,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-11-06 22:44:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 22:44:52,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:52,526 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] [2020-11-06 22:44:52,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:52,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1113016322, now seen corresponding path program 1 times [2020-11-06 22:44:52,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:52,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649044137] [2020-11-06 22:44:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:52,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:52,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617283341] [2020-11-06 22:44:52,570 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 22:44:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:52,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-06 22:44:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:52,762 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 22:44:52,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649044137] [2020-11-06 22:44:52,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:52,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617283341] [2020-11-06 22:44:52,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:52,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:44:52,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944781352] [2020-11-06 22:44:52,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:44:52,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:52,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:44:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:52,768 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-11-06 22:44:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:52,883 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-11-06 22:44:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:44:52,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-06 22:44:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:52,886 INFO L225 Difference]: With dead ends: 63 [2020-11-06 22:44:52,886 INFO L226 Difference]: Without dead ends: 44 [2020-11-06 22:44:52,887 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 [2020-11-06 22:44:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-06 22:44:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-11-06 22:44:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-06 22:44:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-06 22:44:52,900 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2020-11-06 22:44:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:52,900 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-06 22:44:52,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:44:52,901 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-06 22:44:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-06 22:44:52,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:52,902 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] [2020-11-06 22:44:53,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:44:53,117 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:53,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash 849595736, now seen corresponding path program 1 times [2020-11-06 22:44:53,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:53,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449081912] [2020-11-06 22:44:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:53,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:53,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707943428] [2020-11-06 22:44:53,178 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 22:44:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:53,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:53,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:53,376 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:53,376 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:53,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:53,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:53 BoogieIcfgContainer [2020-11-06 22:44:53,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:53,651 INFO L168 Benchmark]: Toolchain (without parser) took 3066.20 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 93.7 MB in the end (delta: 40.4 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:53,652 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 120.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:53,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.19 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 123.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:53,653 INFO L168 Benchmark]: Boogie Preprocessor took 104.83 ms. Allocated memory is still 158.3 MB. Free memory was 123.0 MB in the beginning and 121.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:53,654 INFO L168 Benchmark]: RCFGBuilder took 680.68 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 135.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:53,655 INFO L168 Benchmark]: TraceAbstraction took 1873.51 ms. Allocated memory is still 158.3 MB. Free memory was 135.4 MB in the beginning and 93.7 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:53,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 120.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 390.19 ms. Allocated memory is still 158.3 MB. Free memory was 133.6 MB in the beginning and 123.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.83 ms. Allocated memory is still 158.3 MB. Free memory was 123.0 MB in the beginning and 121.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.68 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 135.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1873.51 ms. Allocated memory is still 158.3 MB. Free memory was 135.4 MB in the beginning and 93.7 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 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