/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:33,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:33,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:33,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:33,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:33,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:33,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:33,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:33,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:33,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:33,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:33,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:33,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:33,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:33,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:33,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:33,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:33,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:33,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:33,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:33,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:33,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:33,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:33,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:33,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:33,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:33,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:33,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:33,568 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 [2020-07-07 11:32:33,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:33,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:33,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:33,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:33,609 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:33,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:33,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:33,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:33,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:33,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:33,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:33,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:33,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:33,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:33,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:33,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:33,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:33,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:33,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:33,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:33,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:33,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:33,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:33,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:33,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:33,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:33,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:33,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:33,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:33,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:33,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:33,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:34,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:34,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:34,006 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:34,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-07-07 11:32:34,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d015b64b4/9c43b3c27aea46a4b0107fe437818257/FLAGe5ec5fc26 [2020-07-07 11:32:34,559 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:34,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss1f.c [2020-07-07 11:32:34,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d015b64b4/9c43b3c27aea46a4b0107fe437818257/FLAGe5ec5fc26 [2020-07-07 11:32:34,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d015b64b4/9c43b3c27aea46a4b0107fe437818257 [2020-07-07 11:32:34,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:34,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:34,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:34,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:34,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:34,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:34" (1/1) ... [2020-07-07 11:32:34,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5785b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:34, skipping insertion in model container [2020-07-07 11:32:34,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:34" (1/1) ... [2020-07-07 11:32:34,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:34,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:35,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:35,158 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:35,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:35,199 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:35,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35 WrapperNode [2020-07-07 11:32:35,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:35,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:35,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:35,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:35,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (1/1) ... [2020-07-07 11:32:35,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:35,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:35,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:35,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:35,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (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 [2020-07-07 11:32:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:32:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:32:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:32:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:32:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:32:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:32:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:35,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:35,666 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 11:32:35,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:35 BoogieIcfgContainer [2020-07-07 11:32:35,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:35,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:35,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:35,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:35,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:34" (1/3) ... [2020-07-07 11:32:35,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d4a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:35, skipping insertion in model container [2020-07-07 11:32:35,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:35" (2/3) ... [2020-07-07 11:32:35,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d4a825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:35, skipping insertion in model container [2020-07-07 11:32:35,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:35" (3/3) ... [2020-07-07 11:32:35,680 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-07-07 11:32:35,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:35,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:35,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:35,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:35,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:35,754 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:35,754 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:35,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:35,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:35,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:35,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-07 11:32:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:32:35,811 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:35,813 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] [2020-07-07 11:32:35,813 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-07 11:32:35,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:35,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732528352] [2020-07-07 11:32:35,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:36,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732528352] [2020-07-07 11:32:36,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:36,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:36,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236323865] [2020-07-07 11:32:36,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:36,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:36,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:36,098 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-07 11:32:36,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:36,231 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-07 11:32:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:36,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-07 11:32:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:36,243 INFO L225 Difference]: With dead ends: 64 [2020-07-07 11:32:36,244 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 11:32:36,248 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 [2020-07-07 11:32:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 11:32:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-07 11:32:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-07 11:32:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-07 11:32:36,297 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-07 11:32:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:36,298 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-07 11:32:36,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-07 11:32:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 11:32:36,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:36,301 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] [2020-07-07 11:32:36,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:36,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:36,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:36,302 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-07 11:32:36,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:36,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853959259] [2020-07-07 11:32:36,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:36,342 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:32:36,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442526846] [2020-07-07 11:32:36,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-07 11:32:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:36,451 INFO L264 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-07 11:32:36,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:32:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:36,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853959259] [2020-07-07 11:32:36,542 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:32:36,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442526846] [2020-07-07 11:32:36,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:36,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:32:36,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256169639] [2020-07-07 11:32:36,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:32:36,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:36,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:32:36,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:32:36,550 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-07-07 11:32:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:36,662 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-07 11:32:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:32:36,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-07 11:32:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:36,664 INFO L225 Difference]: With dead ends: 53 [2020-07-07 11:32:36,664 INFO L226 Difference]: Without dead ends: 38 [2020-07-07 11:32:36,665 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 [2020-07-07 11:32:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-07 11:32:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-07 11:32:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-07 11:32:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-07 11:32:36,675 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-07 11:32:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:36,676 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-07 11:32:36,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:32:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-07 11:32:36,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 11:32:36,677 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:36,678 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] [2020-07-07 11:32:36,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:32:36,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-07 11:32:36,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:36,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597576441] [2020-07-07 11:32:36,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:36,955 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:32:36,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697737734] [2020-07-07 11:32:36,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-07 11:32:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:37,071 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:37,071 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:37,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:32:37,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:37 BoogieIcfgContainer [2020-07-07 11:32:37,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:37,336 INFO L168 Benchmark]: Toolchain (without parser) took 2408.85 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 103.3 MB in the beginning and 90.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:37,338 INFO L168 Benchmark]: CDTParser took 1.73 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:32:37,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.56 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 92.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:37,340 INFO L168 Benchmark]: Boogie Preprocessor took 127.46 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 179.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:37,341 INFO L168 Benchmark]: RCFGBuilder took 342.65 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 160.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:37,344 INFO L168 Benchmark]: TraceAbstraction took 1660.75 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 90.8 MB in the end (delta: 70.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:37,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.73 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.56 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 92.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.46 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 92.3 MB in the beginning and 179.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 342.65 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 160.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1660.75 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 90.8 MB in the end (delta: 70.2 MB). Peak memory consumption was 70.2 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)=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