/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 DAGSIZE --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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:56:07,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:56:07,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:56:07,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:56:07,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:56:07,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:56:07,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:56:07,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:56:07,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:56:07,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:56:07,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:56:07,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:56:07,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:56:07,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:56:07,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:56:07,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:56:07,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:56:07,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:56:07,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:56:07,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:56:07,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:56:07,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:56:07,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:56:07,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:56:07,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:56:07,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:56:07,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:56:07,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:56:07,811 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 03:56:07,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:56:07,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:56:07,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:56:07,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:56:07,833 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:56:07,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:56:07,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:56:07,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:56:07,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:56:07,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:56:07,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:56:07,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:56:07,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:56:07,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:56:07,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:56:07,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:56:07,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:56:07,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:56:07,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:56:07,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:56:07,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:56:07,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:56:07,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:56:07,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:56:07,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:56:07,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:56:07,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:56:07,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:56:07,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:56:07,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 03:56:08,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:56:08,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:56:08,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:56:08,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:56:08,265 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:56:08,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-20 03:56:08,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020562099/bfb1131e0243448b89e226d35019384e/FLAG50314485b [2020-07-20 03:56:09,109 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:56:09,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-20 03:56:09,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020562099/bfb1131e0243448b89e226d35019384e/FLAG50314485b [2020-07-20 03:56:09,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/020562099/bfb1131e0243448b89e226d35019384e [2020-07-20 03:56:09,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:56:09,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:56:09,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:56:09,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:56:09,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:56:09,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:09,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c82b216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09, skipping insertion in model container [2020-07-20 03:56:09,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:09,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:56:09,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:56:09,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:56:09,810 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:56:09,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:56:09,854 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:56:09,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09 WrapperNode [2020-07-20 03:56:09,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:56:09,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:56:09,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:56:09,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:56:09,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:09,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:09,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:09,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:09,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:10,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:10,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (1/1) ... [2020-07-20 03:56:10,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:56:10,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:56:10,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:56:10,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:56:10,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (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 03:56:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:56:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:56:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 03:56:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 03:56:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:56:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:56:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:56:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 03:56:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 03:56:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:56:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:56:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:56:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:56:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:56:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:56:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:56:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:56:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:56:10,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:56:10,480 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 03:56:10,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:56:10 BoogieIcfgContainer [2020-07-20 03:56:10,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:56:10,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:56:10,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:56:10,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:56:10,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:56:09" (1/3) ... [2020-07-20 03:56:10,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b4d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:56:10, skipping insertion in model container [2020-07-20 03:56:10,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:56:09" (2/3) ... [2020-07-20 03:56:10,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b4d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:56:10, skipping insertion in model container [2020-07-20 03:56:10,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:56:10" (3/3) ... [2020-07-20 03:56:10,526 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-07-20 03:56:10,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:56:10,552 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:56:10,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:56:10,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:56:10,614 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:56:10,614 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:56:10,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:56:10,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:56:10,615 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:56:10,615 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:56:10,615 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:56:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 03:56:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:56:10,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:56:10,647 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] [2020-07-20 03:56:10,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:56:10,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:56:10,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-07-20 03:56:10,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:56:10,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932556323] [2020-07-20 03:56:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@bfcf55d [2020-07-20 03:56:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:10,932 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 03:56:10,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932556323] [2020-07-20 03:56:10,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:56:10,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:56:10,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898135841] [2020-07-20 03:56:10,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:56:10,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:56:10,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:56:10,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:56:10,975 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-20 03:56:11,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:56:11,176 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 03:56:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:56:11,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 03:56:11,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:56:11,202 INFO L225 Difference]: With dead ends: 64 [2020-07-20 03:56:11,204 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 03:56:11,214 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 03:56:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 03:56:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-20 03:56:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 03:56:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-20 03:56:11,273 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-07-20 03:56:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:56:11,273 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-20 03:56:11,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:56:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-20 03:56:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:56:11,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:56:11,276 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] [2020-07-20 03:56:11,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:56:11,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:56:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:56:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-07-20 03:56:11,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:56:11,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137991762] [2020-07-20 03:56:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@bfcf55d [2020-07-20 03:56:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:56:11,438 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 03:56:11,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137991762] [2020-07-20 03:56:11,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:56:11,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:56:11,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517579979] [2020-07-20 03:56:11,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:56:11,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:56:11,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:56:11,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:56:11,444 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-07-20 03:56:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:56:11,682 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-07-20 03:56:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:56:11,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-07-20 03:56:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:56:11,687 INFO L225 Difference]: With dead ends: 59 [2020-07-20 03:56:11,688 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 03:56:11,690 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 03:56:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 03:56:11,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-07-20 03:56:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 03:56:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-07-20 03:56:11,710 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-07-20 03:56:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:56:11,711 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-07-20 03:56:11,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:56:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-07-20 03:56:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:56:11,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:56:11,713 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 03:56:11,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:56:11,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:56:11,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:56:11,714 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-07-20 03:56:11,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:56:11,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791067460] [2020-07-20 03:56:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@bfcf55d [2020-07-20 03:56:11,754 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 03:56:11,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641345157] [2020-07-20 03:56:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ab7df95 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 03:56:11,858 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ab7df95 issued 4 check-sat command(s) [2020-07-20 03:56:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 03:56:11,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:56:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:56:11,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:56:11,921 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:56:11,921 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:56:12,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 03:56:12,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:56:12 BoogieIcfgContainer [2020-07-20 03:56:12,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:56:12,194 INFO L168 Benchmark]: Toolchain (without parser) took 2721.70 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.3 MB in the beginning and 90.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:12,196 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 03:56:12,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.38 ms. Allocated memory is still 136.8 MB. Free memory was 99.9 MB in the beginning and 89.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:12,199 INFO L168 Benchmark]: Boogie Preprocessor took 156.64 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 89.6 MB in the beginning and 178.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:12,200 INFO L168 Benchmark]: RCFGBuilder took 474.74 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:12,201 INFO L168 Benchmark]: TraceAbstraction took 1692.76 ms. Allocated memory is still 201.3 MB. Free memory was 161.0 MB in the beginning and 90.1 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:56:12,211 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.38 ms. Allocated memory is still 136.8 MB. Free memory was 99.9 MB in the beginning and 89.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.64 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 89.6 MB in the beginning and 178.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.74 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.7 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1692.76 ms. Allocated memory is still 201.3 MB. Free memory was 161.0 MB in the beginning and 90.1 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 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)=2, 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 *a = malloc(sizeof(long long)*N); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L28] COND TRUE i