/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s3iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:32,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:32,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:32,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:00:32,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:32,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:32,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:32,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:32,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:32,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:32,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:32,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:32,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:32,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:32,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:32,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:32,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:00:32,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:32,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:32,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:32,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:00:32,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:32,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:32,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:32,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:32,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:32,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:32,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:32,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:32,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:32,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:32,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:32,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:32,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:32,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:32,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:32,535 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:32,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:32,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:32,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:32,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:32,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:32,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:32,536 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:00:32,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:32,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:32,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:32,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:32,829 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:32,830 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3iff.c [2020-08-22 23:00:32,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bb96615/99947ac8fdf54dcf9958f60de38a703c/FLAG7a5a6a8fd [2020-08-22 23:00:33,389 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:33,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3iff.c [2020-08-22 23:00:33,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bb96615/99947ac8fdf54dcf9958f60de38a703c/FLAG7a5a6a8fd [2020-08-22 23:00:33,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bb96615/99947ac8fdf54dcf9958f60de38a703c [2020-08-22 23:00:33,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:33,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:33,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:33,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:33,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:33,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:33" (1/1) ... [2020-08-22 23:00:33,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59af46a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:33, skipping insertion in model container [2020-08-22 23:00:33,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:33" (1/1) ... [2020-08-22 23:00:33,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:33,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:33,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:34,001 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:34,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:34,039 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:34,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34 WrapperNode [2020-08-22 23:00:34,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:34,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:34,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:34,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:34,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (1/1) ... [2020-08-22 23:00:34,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:34,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:34,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:34,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:34,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (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 [2020-08-22 23:00:34,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:34,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:34,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:34,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:34,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:34,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:34,565 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 23:00:34,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:34 BoogieIcfgContainer [2020-08-22 23:00:34,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:34,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:34,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:34,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:34,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:33" (1/3) ... [2020-08-22 23:00:34,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fc692c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:34, skipping insertion in model container [2020-08-22 23:00:34,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:34" (2/3) ... [2020-08-22 23:00:34,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fc692c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:34, skipping insertion in model container [2020-08-22 23:00:34,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:34" (3/3) ... [2020-08-22 23:00:34,579 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2020-08-22 23:00:34,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:34,597 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:34,611 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:34,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:34,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:34,635 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:34,635 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:34,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:34,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:34,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:34,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-08-22 23:00:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 23:00:34,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:34,667 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, 1] [2020-08-22 23:00:34,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:34,674 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-08-22 23:00:34,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:34,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868191229] [2020-08-22 23:00:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:34,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868191229] [2020-08-22 23:00:34,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:34,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:34,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075237302] [2020-08-22 23:00:34,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:34,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:34,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:34,923 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-08-22 23:00:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:35,114 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-08-22 23:00:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:35,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-08-22 23:00:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:35,127 INFO L225 Difference]: With dead ends: 113 [2020-08-22 23:00:35,128 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 23:00:35,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 23:00:35,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-08-22 23:00:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 23:00:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-08-22 23:00:35,189 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-08-22 23:00:35,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:35,190 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-08-22 23:00:35,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-08-22 23:00:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 23:00:35,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:35,193 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] [2020-08-22 23:00:35,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:35,194 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:35,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:35,194 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-08-22 23:00:35,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:35,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039944185] [2020-08-22 23:00:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:35,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039944185] [2020-08-22 23:00:35,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:35,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:35,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99068482] [2020-08-22 23:00:35,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:35,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:35,341 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-08-22 23:00:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:35,532 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-08-22 23:00:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:35,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-08-22 23:00:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:35,536 INFO L225 Difference]: With dead ends: 99 [2020-08-22 23:00:35,536 INFO L226 Difference]: Without dead ends: 74 [2020-08-22 23:00:35,538 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 [2020-08-22 23:00:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-22 23:00:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-08-22 23:00:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 23:00:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-08-22 23:00:35,555 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-08-22 23:00:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:35,556 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-08-22 23:00:35,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-08-22 23:00:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 23:00:35,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:35,558 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, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:35,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:35,559 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-08-22 23:00:35,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:35,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566105216] [2020-08-22 23:00:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:36,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:36,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566105216] [2020-08-22 23:00:36,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:00:36,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-22 23:00:36,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575449693] [2020-08-22 23:00:36,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-22 23:00:36,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:36,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-22 23:00:36,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-08-22 23:00:36,074 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-08-22 23:00:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:37,177 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-08-22 23:00:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 23:00:37,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-08-22 23:00:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:37,184 INFO L225 Difference]: With dead ends: 107 [2020-08-22 23:00:37,184 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 23:00:37,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 23:00:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 23:00:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 73. [2020-08-22 23:00:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-08-22 23:00:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-08-22 23:00:37,206 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2020-08-22 23:00:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:37,206 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-08-22 23:00:37,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-22 23:00:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-08-22 23:00:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 23:00:37,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:37,209 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, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:37,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:37,210 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:37,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:37,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-08-22 23:00:37,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:37,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477406366] [2020-08-22 23:00:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:37,255 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 23:00:37,256 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 23:00:37,256 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:37,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 23:00:37,298 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 23:00:37,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:37 BoogieIcfgContainer [2020-08-22 23:00:37,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:37,302 INFO L168 Benchmark]: Toolchain (without parser) took 3533.20 ms. Allocated memory was 141.0 MB in the beginning and 243.8 MB in the end (delta: 102.8 MB). Free memory was 104.3 MB in the beginning and 124.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:37,303 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:37,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.31 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 93.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:37,305 INFO L168 Benchmark]: Boogie Preprocessor took 124.56 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 182.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:37,305 INFO L168 Benchmark]: RCFGBuilder took 404.44 ms. Allocated memory is still 205.0 MB. Free memory was 182.4 MB in the beginning and 163.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:37,307 INFO L168 Benchmark]: TraceAbstraction took 2727.50 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 162.6 MB in the beginning and 124.4 MB in the end (delta: 38.3 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:37,311 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 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.31 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 93.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.56 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 93.2 MB in the beginning and 182.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.44 ms. Allocated memory is still 205.0 MB. Free memory was 182.4 MB in the beginning and 163.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2727.50 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 162.6 MB in the beginning and 124.4 MB in the end (delta: 38.3 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i