/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-3af5e1f [2020-09-04 13:42:55,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:55,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:55,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:55,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:55,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:55,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:55,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:55,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:55,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:55,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:55,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:55,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:55,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:55,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:55,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:55,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:55,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:55,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:55,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:55,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:55,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:55,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:55,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:55,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:55,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:55,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:55,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:55,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:55,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:55,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:55,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:55,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:55,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:55,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:55,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:55,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:55,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:55,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:55,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:55,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:55,219 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:55,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:55,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:55,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:55,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:55,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:55,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:55,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:55,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:55,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:55,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:55,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:55,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:55,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:55,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:55,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:55,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:55,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:55,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:55,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:55,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:55,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:55,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:55,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:55,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:55,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:55,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:55,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:55,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:55,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:55,693 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:55,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-09-04 13:42:55,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758478849/9a39ffd480294d7490491b9971c0af51/FLAG46e8f72ed [2020-09-04 13:42:56,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:56,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss3f.c [2020-09-04 13:42:56,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758478849/9a39ffd480294d7490491b9971c0af51/FLAG46e8f72ed [2020-09-04 13:42:56,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758478849/9a39ffd480294d7490491b9971c0af51 [2020-09-04 13:42:56,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:56,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:56,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:56,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:56,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:56,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:56, skipping insertion in model container [2020-09-04 13:42:56,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:56" (1/1) ... [2020-09-04 13:42:56,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:56,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:57,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:57,015 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:57,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:57,145 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:57,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57 WrapperNode [2020-09-04 13:42:57,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:57,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:57,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:57,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:57,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... [2020-09-04 13:42:57,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:57,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:57,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:57,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:57,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:57,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:57,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:57,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:57,613 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 13:42:57,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:57 BoogieIcfgContainer [2020-09-04 13:42:57,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:57,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:57,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:57,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:57,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:56" (1/3) ... [2020-09-04 13:42:57,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea1b7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:57, skipping insertion in model container [2020-09-04 13:42:57,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:57" (2/3) ... [2020-09-04 13:42:57,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea1b7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:57, skipping insertion in model container [2020-09-04 13:42:57,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:57" (3/3) ... [2020-09-04 13:42:57,654 INFO L109 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-09-04 13:42:57,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:57,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:57,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:57,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:57,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:57,735 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:57,735 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:57,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:57,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:57,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:57,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-04 13:42:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:42:57,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:57,771 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] [2020-09-04 13:42:57,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:57,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:57,779 INFO L82 PathProgramCache]: Analyzing trace with hash -976607933, now seen corresponding path program 1 times [2020-09-04 13:42:57,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:57,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773125798] [2020-09-04 13:42:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:58,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:58,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773125798] [2020-09-04 13:42:58,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:58,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:58,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343382498] [2020-09-04 13:42:58,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:58,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:58,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:58,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:58,062 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-09-04 13:42:58,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:58,214 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-09-04 13:42:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:58,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-04 13:42:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:58,228 INFO L225 Difference]: With dead ends: 70 [2020-09-04 13:42:58,229 INFO L226 Difference]: Without dead ends: 33 [2020-09-04 13:42:58,234 INFO L675 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 [2020-09-04 13:42:58,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-04 13:42:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-04 13:42:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-04 13:42:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-04 13:42:58,284 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2020-09-04 13:42:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:58,285 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-04 13:42:58,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-04 13:42:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:42:58,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:58,286 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] [2020-09-04 13:42:58,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:58,288 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:58,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:58,288 INFO L82 PathProgramCache]: Analyzing trace with hash -714487667, now seen corresponding path program 1 times [2020-09-04 13:42:58,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:58,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001712781] [2020-09-04 13:42:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:58,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001712781] [2020-09-04 13:42:58,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:58,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:58,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536311273] [2020-09-04 13:42:58,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:58,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:58,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:58,488 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-09-04 13:42:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:58,669 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-09-04 13:42:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:58,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-04 13:42:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:58,671 INFO L225 Difference]: With dead ends: 61 [2020-09-04 13:42:58,671 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 13:42:58,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:42:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 13:42:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-09-04 13:42:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 13:42:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-04 13:42:58,684 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-09-04 13:42:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:58,685 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-04 13:42:58,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-04 13:42:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 13:42:58,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:58,687 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] [2020-09-04 13:42:58,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:58,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:58,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1064141225, now seen corresponding path program 1 times [2020-09-04 13:42:58,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:58,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033764877] [2020-09-04 13:42:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:58,731 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:58,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870024087] [2020-09-04 13:42:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:58,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:58,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:58,900 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:58,900 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:59,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:42:59,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:59 BoogieIcfgContainer [2020-09-04 13:42:59,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:59,169 INFO L168 Benchmark]: Toolchain (without parser) took 2431.83 ms. Allocated memory was 140.0 MB in the beginning and 235.4 MB in the end (delta: 95.4 MB). Free memory was 102.4 MB in the beginning and 199.3 MB in the end (delta: -97.0 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:59,170 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:59,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.06 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 182.3 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:59,172 INFO L168 Benchmark]: Boogie Preprocessor took 53.76 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:59,173 INFO L168 Benchmark]: RCFGBuilder took 427.66 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 161.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:59,174 INFO L168 Benchmark]: TraceAbstraction took 1533.55 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 161.1 MB in the beginning and 199.3 MB in the end (delta: -38.2 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:59,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.06 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 182.3 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.76 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.66 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 161.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1533.55 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 161.1 MB in the beginning and 199.3 MB in the end (delta: -38.2 MB). Peak memory consumption was 78.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={1:0}, i=0, malloc(sizeof(long long)*N)={1:0}, N=1, sum={3:0}] [L30] COND TRUE i