/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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:47:51,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:47:51,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:47:51,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 01:47:51,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:47:51,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:47:51,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:47:51,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:47:51,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:47:51,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:47:51,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:47:51,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:47:51,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:47:51,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:47:51,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:47:51,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:47:51,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:47:51,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:47:51,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:47:51,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:47:51,966 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 01:47:51,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:47:51,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:47:51,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:47:51,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:47:51,998 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:47:51,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:47:51,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:47:51,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:47:51,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:47:51,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:47:52,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:47:52,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:47:52,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:47:52,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:47:52,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:47:52,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:47:52,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:47:52,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:47:52,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:47:52,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:47:52,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:47:52,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:47:52,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:47:52,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:47:52,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:47:52,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:47:52,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:47:52,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:47:52,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:47:52,003 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 01:47:52,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:47:52,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:47:52,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:47:52,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:47:52,291 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:47:52,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-20 01:47:52,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1dc56b5f/ac2cd39dc149490bb2cbb8149f1423d3/FLAG79ad053e8 [2020-07-20 01:47:52,872 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:47:52,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-20 01:47:52,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1dc56b5f/ac2cd39dc149490bb2cbb8149f1423d3/FLAG79ad053e8 [2020-07-20 01:47:53,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1dc56b5f/ac2cd39dc149490bb2cbb8149f1423d3 [2020-07-20 01:47:53,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:47:53,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:47:53,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:53,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:47:53,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:47:53,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3217d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53, skipping insertion in model container [2020-07-20 01:47:53,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:47:53,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:47:53,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:53,441 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:47:53,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:53,481 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:47:53,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53 WrapperNode [2020-07-20 01:47:53,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:53,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:47:53,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:47:53,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:47:53,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (1/1) ... [2020-07-20 01:47:53,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:47:53,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:47:53,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:47:53,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:47:53,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (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 01:47:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:47:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:47:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:47:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:47:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:47:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:47:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:47:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:47:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:47:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:47:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:47:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:47:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:47:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:47:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:47:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:47:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:47:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:47:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:47:54,004 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:47:54,005 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 01:47:54,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:54 BoogieIcfgContainer [2020-07-20 01:47:54,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:47:54,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:47:54,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:47:54,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:47:54,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:53" (1/3) ... [2020-07-20 01:47:54,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d1234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:54, skipping insertion in model container [2020-07-20 01:47:54,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:53" (2/3) ... [2020-07-20 01:47:54,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d1234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:54, skipping insertion in model container [2020-07-20 01:47:54,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:54" (3/3) ... [2020-07-20 01:47:54,019 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-07-20 01:47:54,032 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:47:54,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:47:54,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:47:54,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:47:54,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:47:54,104 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:47:54,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:47:54,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:47:54,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:47:54,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:47:54,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:47:54,126 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-07-20 01:47:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:47:54,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:54,135 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] [2020-07-20 01:47:54,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:54,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:54,144 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-07-20 01:47:54,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:54,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609149330] [2020-07-20 01:47:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a905256 [2020-07-20 01:47:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:54,367 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 01:47:54,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609149330] [2020-07-20 01:47:54,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:54,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:47:54,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577853649] [2020-07-20 01:47:54,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:47:54,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:54,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:47:54,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:47:54,394 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-07-20 01:47:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:54,595 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-07-20 01:47:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:47:54,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 01:47:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:54,613 INFO L225 Difference]: With dead ends: 82 [2020-07-20 01:47:54,614 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 01:47:54,622 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 01:47:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 01:47:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 01:47:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 01:47:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-20 01:47:54,664 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-07-20 01:47:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:54,665 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-20 01:47:54,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:47:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-20 01:47:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:47:54,666 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:54,667 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] [2020-07-20 01:47:54,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:47:54,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:54,668 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-07-20 01:47:54,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:54,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438317473] [2020-07-20 01:47:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a905256 [2020-07-20 01:47:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:54,802 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 01:47:54,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438317473] [2020-07-20 01:47:54,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:54,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:47:54,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594453201] [2020-07-20 01:47:54,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:47:54,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:54,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:47:54,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:47:54,806 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-07-20 01:47:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:55,096 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-07-20 01:47:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:47:55,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 01:47:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:55,101 INFO L225 Difference]: With dead ends: 83 [2020-07-20 01:47:55,101 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 01:47:55,103 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 [2020-07-20 01:47:55,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 01:47:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-07-20 01:47:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 01:47:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-07-20 01:47:55,120 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-07-20 01:47:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:55,121 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-07-20 01:47:55,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:47:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-20 01:47:55,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 01:47:55,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:55,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:47:55,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:47:55,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-07-20 01:47:55,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:55,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570765706] [2020-07-20 01:47:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6a905256 [2020-07-20 01:47:55,203 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:47:55,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128681123] [2020-07-20 01:47:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74199a24 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 01:47:55,416 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74199a24 issued 4 check-sat command(s) [2020-07-20 01:47:55,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 01:47:55,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:55,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:55,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:47:55,481 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:47:55,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:47:55,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:47:55 BoogieIcfgContainer [2020-07-20 01:47:55,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:47:55,748 INFO L168 Benchmark]: Toolchain (without parser) took 2548.54 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 104.1 MB in the beginning and 183.4 MB in the end (delta: -79.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:55,749 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 01:47:55,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.05 ms. Allocated memory is still 139.5 MB. Free memory was 103.7 MB in the beginning and 92.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:55,751 INFO L168 Benchmark]: Boogie Preprocessor took 127.71 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.8 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:55,752 INFO L168 Benchmark]: RCFGBuilder took 400.00 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 160.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:55,753 INFO L168 Benchmark]: TraceAbstraction took 1733.56 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 160.4 MB in the beginning and 183.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:55,757 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.05 ms. Allocated memory is still 139.5 MB. Free memory was 103.7 MB in the beginning and 92.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.71 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.8 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.00 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 160.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1733.56 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 160.4 MB in the beginning and 183.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.0 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={2:0}] [L30] COND TRUE i