/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/ms4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:22,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:22,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:22,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:22,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:22,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:22,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:22,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:22,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:23,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:23,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:23,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:23,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:23,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:23,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:23,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:23,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:23,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:23,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:23,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:23,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:23,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:23,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:23,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:23,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:23,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:23,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:23,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:23,073 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 22:44:23,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:23,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:23,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:23,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:23,142 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:23,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:23,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:23,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:23,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:23,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:23,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:23,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:23,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:23,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:23,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:23,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:23,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:23,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:23,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:23,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:23,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:23,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:23,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:23,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:23,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:23,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:23,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:23,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:23,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:23,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:23,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:23,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:23,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:23,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:23,656 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:23,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c [2020-11-06 22:44:23,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1e34406/ec4868c2d88640cca8f4e98366743942/FLAG5958d19f6 [2020-11-06 22:44:24,440 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:24,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms4f.c [2020-11-06 22:44:24,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1e34406/ec4868c2d88640cca8f4e98366743942/FLAG5958d19f6 [2020-11-06 22:44:24,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1e34406/ec4868c2d88640cca8f4e98366743942 [2020-11-06 22:44:24,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:24,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:24,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:24,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:24,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:24,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:24" (1/1) ... [2020-11-06 22:44:24,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b587aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:24, skipping insertion in model container [2020-11-06 22:44:24,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:24" (1/1) ... [2020-11-06 22:44:24,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:24,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:25,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:25,041 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:25,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:25,086 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:25,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25 WrapperNode [2020-11-06 22:44:25,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:25,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:25,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:25,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:25,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (1/1) ... [2020-11-06 22:44:25,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:25,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:25,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:25,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:25,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (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 22:44:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:25,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:25,760 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:25,760 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:44:25,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:25 BoogieIcfgContainer [2020-11-06 22:44:25,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:25,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:25,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:25,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:25,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:24" (1/3) ... [2020-11-06 22:44:25,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd29cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:25, skipping insertion in model container [2020-11-06 22:44:25,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:25" (2/3) ... [2020-11-06 22:44:25,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd29cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:25, skipping insertion in model container [2020-11-06 22:44:25,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:25" (3/3) ... [2020-11-06 22:44:25,774 INFO L111 eAbstractionObserver]: Analyzing ICFG ms4f.c [2020-11-06 22:44:25,793 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:25,798 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:25,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:25,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:25,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:25,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:25,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:25,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:25,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:25,849 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:25,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-06 22:44:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:44:25,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:25,878 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] [2020-11-06 22:44:25,879 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-11-06 22:44:25,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:25,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786861365] [2020-11-06 22:44:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:26,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:26,220 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 22:44:26,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786861365] [2020-11-06 22:44:26,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:26,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:26,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057927314] [2020-11-06 22:44:26,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:26,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:26,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:26,263 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-11-06 22:44:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:26,482 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-11-06 22:44:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:26,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-06 22:44:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:26,507 INFO L225 Difference]: With dead ends: 59 [2020-11-06 22:44:26,507 INFO L226 Difference]: Without dead ends: 26 [2020-11-06 22:44:26,513 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 22:44:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-06 22:44:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-06 22:44:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:44:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-11-06 22:44:26,588 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-11-06 22:44:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:26,588 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-11-06 22:44:26,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-06 22:44:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:44:26,590 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:26,591 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] [2020-11-06 22:44:26,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:26,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:26,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:26,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-11-06 22:44:26,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:26,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411306634] [2020-11-06 22:44:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:26,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:26,819 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 22:44:26,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411306634] [2020-11-06 22:44:26,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:26,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:26,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269344900] [2020-11-06 22:44:26,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:26,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:26,823 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-11-06 22:44:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:26,980 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-11-06 22:44:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:26,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-06 22:44:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:26,982 INFO L225 Difference]: With dead ends: 42 [2020-11-06 22:44:26,983 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:44:26,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:44:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-06 22:44:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:44:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-06 22:44:26,994 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-11-06 22:44:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:26,994 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-06 22:44:26,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-06 22:44:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:44:26,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:26,996 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] [2020-11-06 22:44:26,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:26,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:26,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-11-06 22:44:26,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:26,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167619801] [2020-11-06 22:44:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:27,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:27,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:27,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:27,134 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:27,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:27,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:27 BoogieIcfgContainer [2020-11-06 22:44:27,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:27,189 INFO L168 Benchmark]: Toolchain (without parser) took 2389.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 106.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:27,190 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 100.0 MB in the end (delta: 65.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:27,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.72 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:27,193 INFO L168 Benchmark]: Boogie Preprocessor took 90.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:27,193 INFO L168 Benchmark]: RCFGBuilder took 582.07 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 129.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:27,195 INFO L168 Benchmark]: TraceAbstraction took 1422.10 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 106.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:27,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 100.0 MB in the end (delta: 65.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.72 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 582.07 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 129.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1422.10 ms. Allocated memory is still 151.0 MB. Free memory was 128.8 MB in the beginning and 106.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 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)=118, 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] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={9:0}] [L31] COND TRUE i 3*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] CALL reach_error() VAL [\old(N)=0, N=1] [L10] __assert_fail("0", "ms4f.c", 10, "reach_error") VAL [\old(N)=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 65 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...