/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:47:55,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:47:55,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:47:55,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 01:47:55,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:47:55,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:47:55,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:47:55,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:47:55,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:47:55,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:47:55,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:47:55,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:47:55,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:47:55,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:47:55,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:47:55,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:47:55,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:47:55,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:47:55,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:47:55,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:47:55,965 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 [2020-07-20 01:47:55,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:47:55,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:47:55,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:47:55,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:47:55,982 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:47:55,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:47:55,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:47:55,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:47:55,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:47:55,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:47:55,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:47:55,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:47:55,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:47:55,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:47:55,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:47:55,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:47:55,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:47:55,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:47:55,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:47:55,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:47:55,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:47:55,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:47:55,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:47:55,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:47:55,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:47:55,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:47:55,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:47:55,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:47:55,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:47:55,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:47:56,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:47:56,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:47:56,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:47:56,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:47:56,294 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:47:56,295 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-20 01:47:56,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e4c8872/fa10d7da895e4123a60c64679c4c31b6/FLAG33b21bf19 [2020-07-20 01:47:56,863 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:47:56,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-20 01:47:56,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e4c8872/fa10d7da895e4123a60c64679c4c31b6/FLAG33b21bf19 [2020-07-20 01:47:57,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7e4c8872/fa10d7da895e4123a60c64679c4c31b6 [2020-07-20 01:47:57,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:47:57,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:47:57,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:57,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:47:57,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:47:57,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3b3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57, skipping insertion in model container [2020-07-20 01:47:57,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:47:57,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:47:57,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:57,540 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:47:57,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:57,579 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:47:57,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57 WrapperNode [2020-07-20 01:47:57,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:57,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:47:57,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:47:57,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:47:57,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (1/1) ... [2020-07-20 01:47:57,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:47:57,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:47:57,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:47:57,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:47:57,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (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 [2020-07-20 01:47:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:47:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:47:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:47:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:47:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:47:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:47:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:47:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:47:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:47:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:47:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:47:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:47:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:47:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:47:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:47:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:47:57,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:47:57,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:47:57,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:47:58,082 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:47:58,082 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 01:47:58,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:58 BoogieIcfgContainer [2020-07-20 01:47:58,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:47:58,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:47:58,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:47:58,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:47:58,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:57" (1/3) ... [2020-07-20 01:47:58,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1394108d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:58, skipping insertion in model container [2020-07-20 01:47:58,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:57" (2/3) ... [2020-07-20 01:47:58,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1394108d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:58, skipping insertion in model container [2020-07-20 01:47:58,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:58" (3/3) ... [2020-07-20 01:47:58,097 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-07-20 01:47:58,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:47:58,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:47:58,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:47:58,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:47:58,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:47:58,174 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:47:58,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:47:58,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:47:58,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:47:58,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:47:58,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:47:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 01:47:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 01:47:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:58,237 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] [2020-07-20 01:47:58,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:58,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-20 01:47:58,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:58,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626199073] [2020-07-20 01:47:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2cf7f643 [2020-07-20 01:47:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:47:58,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626199073] [2020-07-20 01:47:58,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:58,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:47:58,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295940213] [2020-07-20 01:47:58,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:47:58,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:47:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:47:58,482 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-20 01:47:58,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:58,611 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 01:47:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:47:58,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 01:47:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:58,632 INFO L225 Difference]: With dead ends: 64 [2020-07-20 01:47:58,633 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 01:47:58,642 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 [2020-07-20 01:47:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 01:47:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 01:47:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 01:47:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 01:47:58,711 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-20 01:47:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:58,713 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 01:47:58,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:47:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 01:47:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 01:47:58,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:58,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:47:58,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:47:58,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:58,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-20 01:47:58,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:58,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788125251] [2020-07-20 01:47:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2cf7f643 [2020-07-20 01:47:58,774 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:47:58,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747264877] [2020-07-20 01:47:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c183356 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:47:58,846 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c183356 issued 2 check-sat command(s) [2020-07-20 01:47:58,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:47:58,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 01:47:58,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:47:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:47:58,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788125251] [2020-07-20 01:47:58,905 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:47:58,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747264877] [2020-07-20 01:47:58,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:58,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:47:58,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307589359] [2020-07-20 01:47:58,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:47:58,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:58,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:47:58,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:47:58,910 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-07-20 01:47:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:58,993 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-20 01:47:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:47:58,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-20 01:47:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:58,995 INFO L225 Difference]: With dead ends: 53 [2020-07-20 01:47:58,995 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 01:47:58,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:47:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 01:47:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-20 01:47:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 01:47:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-20 01:47:59,007 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-20 01:47:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:59,008 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-20 01:47:59,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:47:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-20 01:47:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:47:59,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:59,010 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] [2020-07-20 01:47:59,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:47:59,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:59,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-20 01:47:59,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:59,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750328022] [2020-07-20 01:47:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2cf7f643 [2020-07-20 01:47:59,300 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:47:59,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501688074] [2020-07-20 01:47:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@41b3f859 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 [2020-07-20 01:47:59,392 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@41b3f859 issued 4 check-sat command(s) [2020-07-20 01:47:59,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 01:47:59,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:59,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:59,452 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:47:59,453 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:47:59,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:47:59,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:47:59 BoogieIcfgContainer [2020-07-20 01:47:59,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:47:59,728 INFO L168 Benchmark]: Toolchain (without parser) took 2464.25 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 89.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:59,729 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 01:47:59,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.89 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 89.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:59,731 INFO L168 Benchmark]: Boogie Preprocessor took 132.08 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 89.8 MB in the beginning and 179.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:59,732 INFO L168 Benchmark]: RCFGBuilder took 375.59 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 161.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:59,733 INFO L168 Benchmark]: TraceAbstraction took 1623.42 ms. Allocated memory is still 201.9 MB. Free memory was 160.4 MB in the beginning and 89.3 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:59,737 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 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.89 ms. Allocated memory is still 137.9 MB. Free memory was 100.8 MB in the beginning and 89.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.08 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 89.8 MB in the beginning and 179.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.59 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 161.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1623.42 ms. Allocated memory is still 201.9 MB. Free memory was 160.4 MB in the beginning and 89.3 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 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)=4, 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={2:0}] [L30] COND TRUE i